Conflicts:
- `.github/dependabot.yml`:
Upstream made changes while we have dropped this file.
Keep the file deleted.
- `.prettierignore`:
Upstream made changes at the end of the file, where we
had our extra lines.
Just moved our extra lines back at the end.
- `app/serializers/initial_state_serializer.rb`:
Upstream code style changes.
Applied them.
- `app/services/backup_service.rb`:
Upstream code style changes.
Applied them.
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