Bump the test group with 2 updates

Bumps the test group with 2 updates: [pytest-cov](https://github.com/pytest-dev/pytest-cov) and [tox](https://github.com/tox-dev/tox).


Updates `pytest-cov` from 4.1.0 to 5.0.0
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v4.1.0...v5.0.0)

Updates `tox` from 4.14.1 to 4.14.2
- [Release notes](https://github.com/tox-dev/tox/releases)
- [Changelog](https://github.com/tox-dev/tox/blob/main/docs/changelog.rst)
- [Commits](tox-dev/tox@4.14.1...4.14.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -15,6 +15,6 @@ Pillow==10.2.0
 
 # Test requirements. It's not worth the hassle to keep them separate.
 pytest==8.1.1
-pytest-cov==4.1.0
-tox==4.14.1
+pytest-cov==5.0.0
+tox==4.14.2
 flake8==7.0.0