build: update flutter action and enable caching

- Updated flutter action version
- Enabled caching dependencies

Author: fulleni

.github/workflows/deploy.yml

@@ -17,6 +17,8 @@ jobs:
       - name: Setup Flutter
         uses: subosito/flutter-action@v2
         with:
+          flutter-version: '3.22.x' # Specify the Flutter version you want to use
+          cache: true # Enable caching for Flutter dependencies
           channel: 'stable' # Use the stable channel of Flutter
 
       # 3. Get Flutter dependencies