Bump flutter version in CI to fix analyze error

Author: emawby

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Flutter
         uses: subosito/flutter-action@v2
         with:
-          flutter-version: '2.10.4'
+          flutter-version: '3.3.2'
           channel: 'stable'
 
       - name: Checkout OneSignal-Flutter-SDK