Update hugo.yml

.github/workflows/hugo.yml

@@ -54,7 +54,13 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: '20'
+          node-version: '18'
+          cache: 'npm'
+          # The action defaults to search for the dependency file (package-lock.json,
+          # npm-shrinkwrap.json or yarn.lock) in the repository root, and uses its
+          # hash as a part of the cache key.
+          # https://github.com/actions/setup-node/blob/main/docs/advanced-usage.md#caching-packages-data
+          cache-dependency-path: '**/package-lock.json'          
       - name: Install Node.js dependencies
         run: "[[ -f package-lock.json || -f npm-shrinkwrap.json ]] && npm ci && sudo npm install -g postcss-cli && npm install autoprefixer || true"
       - name: Build with Hugo