Update gh-pages.yml

Author: afc163

.github/workflows/gh-pages.yml

@@ -12,6 +12,8 @@ jobs:
       - name: checkout
         uses: actions/checkout@v4
       - uses: actions/setup-node@v4
+        with:
+          node-version: 20
       - uses: oven-sh/setup-bun@v2
       - name: install
         run: bun i