Bump pytest-cov from 6.1.1 to 6.2.1

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 6.1.1 to 6.2.1.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v6.1.1...v6.2.1)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 6.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -8,6 +8,6 @@ matplotlib==3.10.1
 Sphinx==8.2.3
 sphinx-rtd-theme==3.0.2
 pytest==8.3.5
-pytest-cov==6.1.1
+pytest-cov==6.2.1
 pyyaml==6.0.2
 ruff==0.11.12