Avoid redudant builds

.github/workflows/pipeline.yml

@@ -11,6 +11,10 @@ jobs:
   deploy:
     runs-on: ubuntu-18.04
     steps:
+      - name: Cancel Previous Redundant Builds
+        uses: styfle/cancel-workflow-action@0.9.1
+        with:
+          access_token: ${{ github.token }}
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0