Merge pull request #408 from openstack-k8s-operators/renovate/actions-setup-node-6.x

Update actions/setup-node action to v6

Author: openshift-merge-bot[bot]

.github/workflows/documentation.yaml

@@ -40,7 +40,7 @@ jobs:
           cache: 'pip'
           cache-dependency-path: ./docs/requirements.txt
       - name: Set up Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v6
         with:
           node-version: 20.x
       - name: Build documentation