Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: dawidd6/action-download-artifact@v2, actions/checkout@v3, charmed-kubernetes/actions-operator@main, actions/setup-python@v4. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.