Update node version to 16, use npm ci.

Author: zobo

.github/workflows/ci.yml

@@ -15,9 +15,9 @@ jobs:
       - name: Install Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 14
+          node-version: '16.14.2'
       - run: mkdir artifacts
-      - run: npm install
+      - run: npm ci
       - name: Prettier
         run: npm run prettier-check
       - name: Lint