Update widget_test.yml

Author: boringdeveloper

.github/workflows/widget_test.yml

@@ -16,7 +16,13 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    # Include the flutter action
+    - uses: subosito/flutter-action@v1
+      with:
+        channel: 'stable' 
     - name: Install dependencies
+    # Get flutter packages
       run: flutter pub get
+    # Run widget tests
     - name: Run tests
       run: flutter pub run test