build(deps): bump subosito/flutter-action from 1 to 2

Bumps [subosito/flutter-action](https://github.com/subosito/flutter-action) from 1 to 2.
- [Release notes](https://github.com/subosito/flutter-action/releases)
- [Commits](subosito/flutter-action@v1...v2)

---
updated-dependencies:
- dependency-name: subosito/flutter-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/run_ci_flutter.yml

@@ -23,7 +23,7 @@ jobs:
         with:
           distribution: 'zulu'
           java-version: '12.x'
-      - uses: subosito/flutter-action@v1
+      - uses: subosito/flutter-action@v2
         with:
           channel: ${{ matrix.flutter }}
       - run: flutter --version