Bump tox from 4.6.3 to 4.13.0 (#89)

Bumps [tox](https://github.com/tox-dev/tox) from 4.6.3 to 4.13.0.
- [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@4.6.3...4.13.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-dev.txt

@@ -6,6 +6,6 @@ mypy==1.4.1
 pre-commit==3.3
 pygments==2.17.2
 sphinx==7.0.1
-tox==4.6.3
+tox==4.13.0
 types-requests==2.31.0
 types-setuptools==69.1.0.20240223