The Github Actions start to fail frequently on test-macOS build step due to the current build on mac is about 18GB which seems more than the allocated disk space on the runner (14GB limit IIRC). See this for a failure example:
test-macOS
You are running out of disk space. The runner will stop working when the machine runs out of disk space. Free space left: 47 MB
This currently impacts all the Pull Requests on nodejs cores.