Update publish-doc.yaml and use node 25

Author: remtrik

.github/workflows/publish-doc.yaml

@@ -27,12 +27,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
-          node-version: 21
+          node-version: 25
           cache: 'npm'
           cache-dependency-path: 'package-lock.json'