Update coverage requirements

[jbcoe]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.71%. Comparing base (78c6a9b) to head (a08a7f2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #619   +/-   ##
=======================================
  Coverage   98.71%   98.71%           
=======================================
  Files          14       14           
  Lines         855      855           
  Branches       90       90           
=======================================
  Hits          844      844           
  Misses         11       11           

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[Copilot]

Pull request overview

Updates the Python package requirements used by the CMake-driven coverage virtualenv setup.

Changes:

• Bumps the coverage tooling dependencies (fastcov, lcov_cobertura, setuptools) to newer versions.
• Switches dependency specifiers from exact pins (==) to compatible-release ranges (~=).