Bump tox from 4.27.0 to 4.28.3 in /test in the python-dependencies group

Bump tox from 4.27.0 to 4.28.3 in /test in the python-dependencies group

Bumps the python-dependencies group in /test with 1 update: [tox](https://github.com/tox-dev/tox).

Updates `tox` from 4.27.0 to 4.28.3
- [Release notes](https://github.com/tox-dev/tox/releases)
- [Changelog](https://github.com/tox-dev/tox/blob/main/docs/changelog.rst)
- [Commits](https://github.com/tox-dev/tox/compare/4.27.0...4.28.3)

---
updated-dependencies:
- dependency-name: tox
  dependency-version: 4.28.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-dependencies
...

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