Set minimum node version to 22 for gh-pages.

Author: msporny

.github/workflows/gh-pages.yml

@@ -27,6 +27,8 @@ jobs:
         uses: actions/checkout/@v4
       - name: Setup Node.js
         uses: actions/setup-node@v4
+        with:
+          node-version: 22
       - name: Generate vocabulary
         run: |
           npm info yml2vocab