chore(deps): update microsoft.testing to 18.8.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Microsoft.Testing.Extensions.CodeCoverage	18.7.0 → 18.8.0

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.47%. Comparing base (775bed8) to head (c0ae6ab).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #318   +/-   ##
=======================================
  Coverage   55.47%   55.47%           
=======================================
  Files           7        7           
  Lines         530      530           
  Branches       60       60           
=======================================
  Hits          294      294           
  Misses        224      224           
  Partials       12       12           

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