Use node 16 to deploy website

Author: bkeepers

.github/workflows/build.yml

@@ -9,8 +9,13 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - uses: actions/setup-node@v6
+        with:
+          node-version: "16"
+          cache: "npm"
+
       - name: Install
-        run: npm install
+        run: npm ci
 
       - name: Build
         run: npm run build