Use actions/cache v2

Author: joshmgross

.github/workflows/nodejs.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Checkout the project
       uses: actions/checkout@v2
     - name: Cache node modules
-      uses: actions/cache@v1
+      uses: actions/cache@v2
       with:
         path: ~/.npm
         key: ${{ runner.os }}-node-${{ hashFiles('**/yarn.lock') }}