Update actions/setup-python action to v6

Author: renovate[bot]

.github/workflows/cla-check.yml

@@ -15,7 +15,7 @@ jobs:
         with:
           repository: neo-technology/whitelist-check
           token: ${{ secrets.NEO4J_TEAM_GRAPHQL_PERSONAL_ACCESS_TOKEN }}
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: 3
       - name: Install dependencies