Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v3, actions/setup-python@v4, actions/upload-artifact@v4, dawidd6/action-send-mail@6e71c855c9a091d80a519621b9fd3e8d252ca40c. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/