Bump tox from 3.14.6 to 4.26.0

Bumps [tox](https://github.com/tox-dev/tox) from 3.14.6 to 4.26.0.
- [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@3.14.6...4.26.0)

---
updated-dependencies:
- dependency-name: tox
  dependency-version: 4.26.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements/dev.txt

@@ -1,2 +1,2 @@
 pre-commit==4.1.0
-tox==3.14.6
+tox==4.26.0