Bump tox from 4.27.0 to 4.28.0

Bumps [tox](https://github.com/tox-dev/tox) from 4.27.0 to 4.28.0.
- [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@4.27.0...4.28.0)

---
updated-dependencies:
- dependency-name: tox
  dependency-version: 4.28.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-test.txt

@@ -8,5 +8,5 @@ pylint-django==2.6.1
 pytest-benchmark==5.1.0
 pytest-django==4.11.1
 pytest==8.4.1
-tox==4.27.0
+tox==4.28.0
 twine==6.1.0