docs/data/reusables/github-actions/supported-github-runners.md

Virtual environment	YAML workflow label
Windows Server 2019	windows-latest or windows-2019
Windows Server 2016	windows-2016
Ubuntu 20.04	ubuntu-latest or ubuntu-20.04
Ubuntu 18.04	ubuntu-18.04
Ubuntu 16.04	ubuntu-16.04
macOS Big Sur 11.0	macos-11.0
macOS Catalina 10.15	macos-latest or macos-10.15