ci(workflow): add 'npm' cache for actions/setup-node in .github/workflows

.github/workflows/ci.yml

@@ -14,11 +14,7 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: 12
-      - uses: actions/cache@v2
-        with:
-          path: ~/.npm
-          key: ${{runner.os}}-npm-${{hashFiles('**/package-lock.json')}}
-          restore-keys: ${{runner.os}}-npm-
+          cache: npm
       - run: npm ci
       - run: npm run style:check
       - run: npm test