Bump coverage from 7.8.2 to 7.9.1 (#236)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.8.2 to 7.9.1.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.8.2...7.9.1)

---
updated-dependencies:
- dependency-name: coverage
  dependency-version: 7.9.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -1,6 +1,6 @@
 pytest==8.3.5
 pytest-cov==6.1.1
-coverage==7.8.2
+coverage==7.9.1
 mypy==1.15.0
 pydocstyle==6.1.1
 flake8==7.2.0