build(deps-dev): bump tox from 4.6.4 to 4.9.0

Bumps [tox](https://github.com/tox-dev/tox) from 4.6.4 to 4.9.0.
- [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@4.6.4...4.9.0)

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

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

requirements_z_dev_base.txt

@@ -6,5 +6,5 @@ flake8==6.0.0
 isort==5.12.0
 coverage==6.5.0
 coveralls==3.3.1
-tox==4.6.4
+tox==4.9.0
 beautifulsoup4==4.12.2