Only lint once in CI (#5128)

.github/workflows/build.yml

@@ -41,3 +41,19 @@ jobs:
 
       env:
         CI: true
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Use Node.js 16.x
+      uses: actions/setup-node@v1
+      with:
+        node-version: 16.x
+
+    - name: Npm Install
+      run: npm install
+
+    - name: Lint
+      run: npm run lint