Bump tox from 4.5.1 to 4.6.3

Bumps [tox](https://github.com/tox-dev/tox) from 4.5.1 to 4.6.3.
- [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@4.5.1...4.6.3)

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

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

requirements/requirements-test.lock.txt

@@ -261,7 +261,7 @@ tomlkit==0.11.8
     # via pylint
 tornado==6.3.2
     # via livereload
-tox==4.6.2
+tox==4.6.3
     # via -r requirements/requirements-test.in
 twine==4.0.2
     # via -r requirements/requirements-test.in