Fix

Author: csyonghe

.github/workflows/ensure-pr-label.yml

@@ -1,13 +1,14 @@
 name: Verify PR Labels
 
 on:
-    pull_request:
-     types: [opened, labeled, unlabeled, synchronize]
+  pull_request:
+    branches: [ master ]
+    types: [opened, labeled, unlabeled, synchronize]
 
 jobs:
-    steps:
-        uses: jesusvasquez333/verify-pr-label-action@v1.4.0
-        with:
-            github-token: '${{ secrets.GITHUB_TOKEN }}'
-            valid-labels: 'pr: non-breaking, pr: breaking change, pr: new feature'
-            disable-reviews: true
+  steps:
+    uses: jesusvasquez333/verify-pr-label-action@v1.4.0
+    with:
+      github-token: '${{ secrets.GITHUB_TOKEN }}'
+      valid-labels: 'pr: non-breaking, pr: breaking change, pr: new feature'
+      disable-reviews: true