Updated pr status check gh action config

.github/workflows/status.yml

@@ -9,14 +9,20 @@ jobs:
       matrix:
         node-version: [16.x]
     steps:
-    - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
         with:
-        # Checkout the head ref instead of the PR branch that github creates.
-        ref: ${{ github.head_ref }}
+          ref: ${{ github.event.pull_request.head.sha }}
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node-version }}
+      - name: Use Cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            node_modules
+            */*/node_modules
+          key: ${{ runner.os }}-${{ matrix.node_version }}-${{ hashFiles('**/package-lock.json') }}
       - name: Install and build
         run: |
           npm install