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

Author: renovate[bot]

.github/workflows/publish-website.yaml

@@ -56,7 +56,7 @@ jobs:
         echo "::set-output name=node_version::${node_version}"
 
     - name: Setup Node
-      uses: actions/setup-node@v5
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ steps.get_node_version.outputs.node_version }}