ci: enable setup-node action npm cache

Author: angristan

.github/workflows/push.yml

@@ -11,6 +11,7 @@ jobs:
         uses: actions/[email protected]
         with:
           node-version: 16.x
+          cache: npm
       - run: npm install
       - run: npm run lint:check
       - run: npm run format:check
@@ -23,6 +24,7 @@ jobs:
         uses: actions/[email protected]
         with:
           node-version: 16.x
+          cache: npm
       - run: npm install
       - run: npm run build