build(deps): bump pytest-cov from 5.0.0 to 6.0.0 in /requirements (#2825

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Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 5.0.0 to 6.0.0.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v5.0.0...v6.0.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jirka Borovec <[email protected]>

requirements/_tests.txt

@@ -5,7 +5,7 @@ codecov ==2.1.13
 coverage ==7.6.*
 codecov ==2.1.13
 pytest ==8.3.*
-pytest-cov ==5.0.0
+pytest-cov ==6.0.0
 pytest-doctestplus ==1.2.1
 pytest-rerunfailures ==14.0
 pytest-timeout ==2.3.1