Merge pull request #387 from openstack-k8s-operators/renovate/actions-setup-python-6.x

Update actions/setup-python action to v6

Author: openshift-merge-bot[bot]

.github/workflows/documentation.yaml

@@ -34,7 +34,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
       - name: Setup python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v6
         with:
           python-version: '3.11'
           cache: 'pip'