Update main.yml

.github/workflows/main.yml

@@ -47,7 +47,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: subosito/flutter-action@v2
       with:
-        flutter-version: '3.9.0'
+        flutter-version: '3.3.9'
         channel: 'stable'
     - run: flutter --version
     - name: Compiling