Bump subosito/flutter-action from 2.13.0 to 2.15.0

Bumps [subosito/flutter-action](https://github.com/subosito/flutter-action) from 2.13.0 to 2.15.0.
- [Release notes](https://github.com/subosito/flutter-action/releases)
- [Commits](subosito/flutter-action@62f096c...3d80492)

---
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/health_base.yaml

@@ -99,7 +99,7 @@ jobs:
 
       - run: mkdir -p current_repo/output/
 
-      - uses: subosito/flutter-action@62f096cacda5168a3bd7b95793373be14fa4fbaf
+      - uses: subosito/flutter-action@3d804929922b667a63a229bc59037807f969e885
         if: ${{ inputs.use-flutter }}
         with:
           channel: ${{ inputs.sdk }}

.github/workflows/publish.yaml

@@ -119,7 +119,7 @@ jobs:
         with:
           submodules: ${{ inputs.checkout_submodules }}
 
-      - uses: subosito/flutter-action@62f096cacda5168a3bd7b95793373be14fa4fbaf
+      - uses: subosito/flutter-action@3d804929922b667a63a229bc59037807f969e885
         if: ${{ inputs.use-flutter }}
         with:
           channel: ${{ inputs.sdk }}
@@ -202,7 +202,7 @@ jobs:
         with:
           submodules: ${{ inputs.checkout_submodules }}
 
-      - uses: subosito/flutter-action@62f096cacda5168a3bd7b95793373be14fa4fbaf
+      - uses: subosito/flutter-action@3d804929922b667a63a229bc59037807f969e885
         if: ${{ inputs.use-flutter }}
         with:
           channel: ${{ inputs.sdk }}