change caching

thanks @desrosj

.github/workflows/tests.yml

@@ -64,17 +64,7 @@ jobs:
         uses: actions/setup-node@v2
         with:
           node-version: 14
-
-      - name: Cache NodeJS modules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
-        with:
-          # npm cache files are stored in `~/.npm` on Linux/macOS
-          path: ~/.npm
-          key: ${{ runner.os }}-npm-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-npm-
+          cache: npm
 
       - name: Prepare step
         run: php prepare.php