[CI] macOS-13 -> macOS-15-intel

[giordano]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.64%. Comparing base (6c916a5) to head (f87a84e).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #330   +/-   ##
=======================================
  Coverage   73.64%   73.64%           
=======================================
  Files           5        5           
  Lines         535      535           
=======================================
  Hits          394      394           
  Misses        141      141           

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