ci: fix flutter breaking change

Author: davidgomesdev

.github/workflows/release.yml

@@ -76,6 +76,7 @@ jobs:
     - uses: subosito/flutter-action@v2
       with:
         channel: 'stable'
+        flutter-version: 3.19.6
 
     - name: 🌱 - Get dependencies
       run: flutter pub get