Upgrade node version in publish task

Author: h0ngcha0

.github/workflows/publish.yaml

@@ -23,7 +23,7 @@ jobs:
       - name: Setup node.js
         uses: actions/setup-node@v1
         with:
-          node-version: 16
+          node-version: 18
 
       - name: Build website
         run: npm ci && npm run build