Update MacOS image used in dnceng owned repositories

[riarenas]

We are getting the following warning in arcade-validation-official runs:

[warning]A brownout will take place on November 11, 14:00 UTC - November 12, 00:00 UTC to raise awareness of the upcoming macOS-12 environment removal. For more details, see https://github.com/actions/runner-images/issues/10721

According to the linked issue, the macos-12 images will be removed on December 3rd, so we should go through our repos and update the image used by the various branches in the various repositories.

• [ ] https://github.com/dotnet/arcade
• [ ] https://github.com/dotnet/arcade-validation
• [ ] https://github.com/dotnet/dnceng
• [ ] https://github.com/dotnet/dnceng-shared
• [ ] https://dnceng.visualstudio.com/internal/_git/dotnet-arcade-extensions
• [ ] https://dnceng.visualstudio.com/internal/_git/dotnet-helix-machines
• [ ] https://dnceng.visualstudio.com/internal/_git/dotnet-helix-service

Release Note Category

• [ ] Feature changes/additions
• [ ] Bug fixes
• [ ] Internal Infrastructure Improvements

  Release Note Description

[riarenas]

For most repos this should be a straightforward move to using a new image (we can even consider using the -latest tag here for main branches). The oldest release branches of the repos that branch (arcade, arcade-validation) have some potential of not being able to move to the newest versions, so we should pay attention to those cases.