gitlab-ci: Move some macOS merge request jobs to arm64 hosts
Over time we are adding arm64 hosts and removing x86_64 hosts.
Switch to using arm64 for some of the more common jobs.
System updates will be applied on Jan 23rd between 7am and 9am, EST (UTC-05:00). This site will have intermittent downtime during that time.
Over time we are adding arm64 hosts and removing x86_64 hosts.
Switch to using arm64 for some of the more common jobs.