ci: Move ios-12-5-1-x86-64-coreml to periodic (#80455)
Moves these jobs to periodic, no one currently supports these jobs and
they do take up limited macOS resources so moving to periodic for now.
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/80455
Approved by: https://github.com/linbinyu
