chore: restore npm cache (#2994)

Author: snitin315

.github/workflows/nodejs.yml

@@ -78,7 +78,16 @@ jobs:
         if: matrix.os == 'windows-latest'
         run: npm i -g npm
 
+      - name: Cache Node.js modules
+        id: cache
+        uses: actions/cache@v2
+        with:
+          # npm cache files are stored in `~/.npm` on Linux/macOS
+          path: ~/.npm
+          key: ${{ runner.OS }}-${{ matrix.node-version }}-${{ hashFiles('**/package-lock.json') }}
+
       - name: Install dependencies
+        if: steps.cache.outputs.cache-hit != 'true'
         run: npm ci
 
       - name: Install webpack ${{ matrix.webpack-version }}