Bump subosito/flutter-action from 2.10.0 to 2.12.0

Bumps [subosito/flutter-action](https://github.com/subosito/flutter-action) from 2.10.0 to 2.12.0.
- [Release notes](https://github.com/subosito/flutter-action/releases)
- [Commits](subosito/flutter-action@48cafc2...2783a3f)

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

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

Author: dependabot[bot]

.github/workflows/test-package.yml

@@ -83,7 +83,7 @@ jobs:
       - uses: dart-lang/setup-dart@b64355ae6ca0b5d484f0106a033dd1388965d06d
         with:
           sdk: '3.3.0-120.0.dev' # TODO: switch back to rolling 'dev' channel after it gets updated.
-      - uses: subosito/flutter-action@cc97e1648fff6ca5cc647fa67f47e70f7895510b
+      - uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225
         with:
           # flutter-version: '3.4.0-34.1.pre'
           channel: 'master' # TODO: switch back to rolling 'dev' channel after it gets updated.