ci: Update to Xcode 15.2

[cbaker6]

New Pull Request Checklist

• I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

Approach

TODOs before merging

• Add tests
• Add entry to changelog
• Add changes to documentation (guides, repository pages, in-code descriptions)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.79%. Comparing base (b3169f2) to head (d44833f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #156      +/-   ##
==========================================
- Coverage   91.80%   91.79%   -0.01%     
==========================================
  Files         178      178              
  Lines       15800    15800              
==========================================
- Hits        14505    14504       -1     
- Misses       1295     1296       +1     

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