try a tag of flutter-action

Author: cynthiajoan

.github/workflows/analyzer.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: dart-lang/setup-dart@v1
-      - uses: subosito/flutter-action@v2
+      - uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225
         with:
           channel: stable
       - run: dart pub get