docs(release): Beta channel procedure, promote, rollback and traps; betas are GitHub-only on package channels (#1496, #1495) - #1711

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/github-script@v7. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/