一般公開されたまじ？？？？

partner-runner-images/images/arm-ubuntu-24-image.md at main · actions/partner-runner-images
https://github.com/actions/partner-runner-images/blob/main/images/arm-ubuntu-24-image.md

Linux [Public preview] として `ubuntu-24.04-arm` と `ubuntu-22.04-arm` 追加されてる

About GitHub-hosted runners - GitHub Docs
https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories