Bump tox from 4.11.3 to 4.28.4 in /requirements/dev

Bumps [tox](https://github.com/tox-dev/tox) from 4.11.3 to 4.28.4.
- [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...4.28.4)

---
updated-dependencies:
- dependency-name: tox
  dependency-version: 4.28.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/dev/dev.txt

@@ -2,7 +2,7 @@ ruff == 0.11.7
 mypy == 1.13.0
 nbconvert == 7.16.4
 pandas-stubs == 2.2.3.241009
-tox == 4.11.3
+tox == 4.28.4
 types-setuptools == 75.8.0.20250110
 sphinx == 7.3.7
 enum-tools[sphinx] == 0.12.0