build(deps): update codecov/codecov-action action to v6

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	major	v5 → v6

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Release Notes

codecov/codecov-action (codecov/codecov-action)

v6

Compare Source

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.20%. Comparing base (4798d0c) to head (9f8811d).
⚠️ Report is 8 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2576   +/-   ##
=======================================
  Coverage   97.20%   97.20%           
=======================================
  Files          59       59           
  Lines        6755     6755           
=======================================
  Hits         6566     6566           
  Misses        189      189           

Flag	Coverage Δ
unittests	97.20% <ø> (ø)

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