Add cd step to use node 20

.github/workflows/cd.yml

@@ -29,6 +29,10 @@ jobs:
         uses: actions/checkout@v4
         with:
           path: checkout-prefix
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
       - name: Install firebase-tools
         run: npm install -g firebase-tools
       # - name: Authenticate to Google