Update format command from Flutter to Dart

Author: danielroek

.github/workflows/base.yaml

@@ -31,7 +31,7 @@ jobs:
       - name: Install dependencies
         run: flutter pub get
       - name: Format code
-        run: flutter format --dry-run --set-exit-if-changed $(find . -name "*.dart" -not -wholename "./lib/localization/intl/*")
+        run: dart format --set-exit-if-changed $(find . -name "*.dart" -not -wholename "./lib/localization/intl/*")
       - name: Analyze static code
         run: flutter analyze
       - name: Run tests