ci: skip tests on docs-only pull requests and cancel superseded runs - #116

No such keg: /usr/local/Cellar/boost

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache/restore@v4, actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Already linked: /usr/local/Cellar/boost@1.85/1.85.0_3

libunwind-headers has been deprecated because it is not maintained upstream! It will be disabled on 2027-05-17.