Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871, DavidAnson/markdownlint-cli2-action@b4c9feab76d8025d1e83c653fa3990936df0e6c8, step-security/harden-runner@91182cccc01eb5e619899d80e4e971d6181294a7. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/