chore: Bump tox from 4.11.3 to 4.15.0

Bumps [tox](https://github.com/tox-dev/tox) from 4.11.3 to 4.15.0.
- [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@4.11.3...4.15.0)

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

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

requirements_test.txt

@@ -4,4 +4,4 @@ coverage==7.4.1
 flake8==6.0.0
 mypy==1.8.0
 psycopg2==2.9.9 --no-binary psycopg2
-tox==4.11.3
+tox==4.15.0