ci: Run pipelines on all macOS runners

[bthomee]

High Level Overview of Change

This change removes a label that unnecessarily restricts the macOS runners to a subset of those available.

Context of Change

There are idle macOS runners that we can leverage to increase performance of CI builds.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (non-breaking change that only restructures code)
• Performance (increase or change in throughput and/or latency)
• Tests (you added tests for code that already exists, or your new feature included in this PR)
• Documentation update
• Chore (no impact to binary, e.g. .gitignore, formatting, dropping support for older tooling)
• Release

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.1%. Comparing base (3c9f5b6) to head (0f557df).

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #6181     +/-   ##
=========================================
- Coverage     79.1%   79.1%   -0.0%     
=========================================
  Files          836     836             
  Lines        71257   71257             
  Branches      8303    8306      +3     
=========================================
- Hits         56389   56386      -3     
- Misses       14868   14871      +3     

see 4 files with indirect coverage changes

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