chore(deps): update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/publish_pages.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Configure Pages
         uses: actions/configure-pages@v5
       - name: Install Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "22"
       - name: Install Antora