Update flutter_build.yml

Author: OlehMarch

.github/workflows/flutter_build.yml

@@ -23,7 +23,7 @@ jobs:
     - name: 'Setup Flutter'
       uses: subosito/flutter-action@v2
       with:
-        flutter-version: '3.13.9'
+        flutter-version: '3.24.0'
         channel: 'stable'
 
     - name: 'Get Packages'