Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: LoveToKnow/slackify-markdown-action@698a1d4d0ff1794152a93c03ee8ca5e03a310d4e. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/