Update to OpenZeppelin contracts 5.1.0

The current Zeto contracts use Array.sort(), which was added in 5.1.0. They do not compile with earlier versions of the library. Signed-off-by: Andrew Richardson <[email protected]>
hyperledger-labs · Jan 4, 2025 · 436acff · 436acff
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diff --git a/solidity/.gitignore b/solidity/.gitignore
@@ -5,6 +5,5 @@ cache
 typechain-types
 ignition/deployments
 .openzeppelin
-package-lock.json
 **/*costs.csv
-**/*_plot.png
+**/*_plot.png