maybe fix build

Author: avdosev

.github/workflows/dart.yml

@@ -19,7 +19,7 @@ jobs:
         java-version: '12.x'
     - uses: subosito/flutter-action@v1
       with:
-        flutter-version: '2.8.0'
+        flutter-version: '2.10.3'
         channel: 'stable'
     - name: Install dependencies
       run: flutter pub get