build(deps): bump subosito/flutter-action from 2.14.0 to 2.16.0

Bumps [subosito/flutter-action](https://github.com/subosito/flutter-action) from 2.14.0 to 2.16.0.
- [Release notes](https://github.com/subosito/flutter-action/releases)
- [Commits](subosito/flutter-action@1c5eb12...44ac965)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/test.yaml

@@ -25,7 +25,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Flutter
-        uses: subosito/flutter-action@1c5eb12d812966ca84680edc38353a0851c8fd56
+        uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1
         with:
           channel: 'stable'