⬆️ Bump mutmut from 2.5.1 to 3.2.3

Bumps [mutmut](https://github.com/boxed/mutmut) from 2.5.1 to 3.2.3.
- [Changelog](https://github.com/boxed/mutmut/blob/main/HISTORY.rst)
- [Commits](boxed/mutmut@2.5.1...3.2.3)

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

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