switch from macos-13 to macos-15-intel on CI

[slayoo]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.50%. Comparing base (56ebdf3) to head (74a8ff1).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1740   +/-   ##
=======================================
  Coverage   86.50%   86.50%           
=======================================
  Files         412      412           
  Lines       10372    10372           
=======================================
  Hits         8972     8972           
  Misses       1400     1400           

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