move cache & install to node setup

Author: keithamus

.github/workflows/lighthouse.yml

@@ -14,6 +14,8 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 16.x
+          cache: 'npm'
+      - run: npm ci
 
       - name: Use Ruby 2.7.3
         uses: ruby/setup-ruby@v1
@@ -22,19 +24,6 @@ jobs:
           bundler-cache: true
           working-directory: docs
 
-      - name: Restore npm cache
-        uses: actions/cache@v2
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
-
-      - name: Install dependencies
-        run: |
-          npm ci
-          cd docs && rm -rf vendor && cd ..
-
       - name: Build docs
         run: npm run build:docs
         env: