Update all Solidity pragmas to 0.8.27

This matches the current compiler settings in hardhat.config.ts

Signed-off-by: Andrew Richardson <[email protected]>

solidity/contracts/erc20.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
 import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

solidity/contracts/factory.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
 import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

solidity/contracts/lib/common.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 /// @title A core library for Zeto based token contracts
 /// @author Kaleido, Inc.

solidity/contracts/lib/interfaces/izeto.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./izeto_base.sol";
 

solidity/contracts/lib/interfaces/izeto_base.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoBase {
     event UTXOMint(uint256[] outputs, address indexed submitter, bytes data);

solidity/contracts/lib/interfaces/izeto_common.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 uint256 constant MAX_BATCH = 10;
 interface IZetoCommon {

solidity/contracts/lib/interfaces/izeto_encrypted.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoEncrypted {
     event UTXOTransferWithEncryptedValues(

solidity/contracts/lib/interfaces/izeto_fungible_initializable.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoFungibleInitializable {
     function initialize(

solidity/contracts/lib/interfaces/izeto_lockable.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Commonlib} from "../common.sol";
 

solidity/contracts/lib/interfaces/izeto_nf_initializable.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 interface IZetoNonFungibleInitializable {
     function initialize(

solidity/contracts/lib/registry.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
 import {SmtLib} from "@iden3/contracts/lib/SmtLib.sol";

solidity/contracts/lib/zeto_base.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./interfaces/izeto_base.sol";
 import {Commonlib} from "./common.sol";

solidity/contracts/lib/zeto_common.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Commonlib} from "./common.sol";
 import {IZetoCommon} from "./interfaces/izeto_common.sol";

solidity/contracts/lib/zeto_fungible.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Groth16Verifier_CheckHashesValue} from "./verifier_check_hashes_value.sol";
 import {Groth16Verifier_CheckNullifierValue} from "./verifier_check_nullifier_value.sol";

solidity/contracts/lib/zeto_fungible_withdraw.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Groth16Verifier_CheckHashesValue} from "./verifier_check_hashes_value.sol";
 import {Groth16Verifier_CheckInputsOutputsValue} from "./verifier_check_inputs_outputs_value.sol";

solidity/contracts/lib/zeto_fungible_withdraw_nullifier.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Groth16Verifier_CheckHashesValue} from "./verifier_check_hashes_value.sol";
 import {Groth16Verifier_CheckNullifierValue} from "./verifier_check_nullifier_value.sol";

solidity/contracts/lib/zeto_lock.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./interfaces/izeto_base.sol";
 import {IZetoLockable, ILockVerifier, IBatchLockVerifier} from "./interfaces/izeto_lockable.sol";

solidity/contracts/lib/zeto_nullifier.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoBase} from "./interfaces/izeto_base.sol";
 import {ZetoCommon} from "./zeto_common.sol";

solidity/contracts/zeto_anon.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";

solidity/contracts/zeto_anon_enc.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoEncrypted} from "./lib/interfaces/izeto_encrypted.sol";
 import {ILockVerifier, IBatchLockVerifier} from "./lib/interfaces/izeto_lockable.sol";

solidity/contracts/zeto_anon_enc_nullifier.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoEncrypted} from "./lib/interfaces/izeto_encrypted.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";

solidity/contracts/zeto_anon_enc_nullifier_kyc.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZetoEncrypted} from "./lib/interfaces/izeto_encrypted.sol";
 import {ILockVerifier, IBatchLockVerifier} from "./lib/interfaces/izeto_lockable.sol";

solidity/contracts/zeto_anon_enc_nullifier_non_repudiation.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
 import {Groth16Verifier_CheckHashesValue} from "./lib/verifier_check_hashes_value.sol";

solidity/contracts/zeto_anon_nullifier.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";

solidity/contracts/zeto_anon_nullifier_kyc.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {MAX_BATCH} from "./lib/interfaces/izeto_common.sol";

solidity/contracts/zeto_nf_anon.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {Groth16Verifier_CheckUtxosNfOwner} from "./lib/verifier_check_utxos_nf_owner.sol";

solidity/contracts/zeto_nf_anon_nullifier.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {IZeto} from "./lib/interfaces/izeto.sol";
 import {ILockVerifier, IBatchLockVerifier} from "./lib/interfaces/izeto_lockable.sol";

solidity/contracts/zkDvP.sol

@@ -13,7 +13,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.27;
 
 import {Commonlib} from "./lib/common.sol";
 import {Zeto_Anon} from "./zeto_anon.sol";