Support macos-15, macos-15-large, and macos-15-xlarge runner labels. The macOS 15 runner is not globally available yet, but they are available in beta. (#453, thanks @muzimuzhi)
Release artifact includes checksums for the released binaries. The file name is actionlint_{version}_checksums.txt. (#449)
For example, the checksums for v1.7.3 can be found here.
Fix download-path output is missing in actions/download-artifact@v3 action. (#442)
Note that the latest version actions/download-artifact@v4 was not affected by this issue.
