Release/4.8.7 (#258)

### Description
<!-- Describe what change this PR is implementing -->

### Types of Changes
<!--- What types of changes does your code introduce? -->
- [ ] Tech Debt (Code improvements)
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Dependency upgrade (A change in substrate or any 3rd party crate
version)

### Migrations and Hooks
<!--- Check the following box with an x if the following applies: -->
- [x] This change requires a runtime migration.
- [ ] Modifies `on_initialize`
- [ ] Modifies `on_finalize`

### Checklist
<!--- All boxes need to be checked. Follow this checklist before
requiring PR review -->
- [x] Change has been tested locally.
- [x] Change adds / updates tests.
- [x] Changelog doc updated.

---------

Co-authored-by: Rakan Al-Huneiti <[email protected]>
Co-authored-by: Raid5594 <[email protected]>
Co-authored-by: Raid Ateir <[email protected]>
Co-authored-by: aie0 <[email protected]>
Co-authored-by: Pavel <[email protected]>

.github/auto_assign.yml

@@ -6,7 +6,6 @@ reviewers:
   - Raid5594
   - aie0
   - yahortsaryk
-  - khssnv
 skipKeywords:
   - wip
-numberOfReviewers: 2
+numberOfReviewers: 1

.github/workflows/ecr.yaml

@@ -1,10 +1,13 @@
 name: ECR
 
 on:
-  pull_request:
+  push:
     branches:
       - dev
+      - staging
       - master
+  pull_request:
+    branches:
       - 'release/**'
       - 'hotfix/**'
     types:

.github/workflows/stage.yaml

@@ -108,7 +108,7 @@ jobs:
           workflow_file_name: run-simulations-env-local-triggered.yml
           client_payload: |-
             {
-              "POS_NODE_VERSION": "master-latest"
+              "POS_NODE_VERSION": "staging-latest"
             }
           ref: master
           propagate_failure: false

CHANGELOG.md

@@ -11,8 +11,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [vNext]
 
+### Changed
+
+- Changes in `pallet-ddc-payouts::begin_billing_report` crate to accept start and end of the era.
+
+- More explicit events in `pallet-ddc-payouts` and `pallet-ddc-customers`
 - ...
 
+## [4.8.7]
+
+### Changed
+
+- [C,D] Updated Substrate to polkadot-v0.9.38
+- [C] Added pallet-preimage to support democracy functionality.
+
 ## [4.8.6]
 
 ### Changed