Update diffy requirement from = 3.4.0 to = 3.4.2
Update diffy requirement from = 3.4.0 to = 3.4.2

Updates the requirements on [diffy](https://github.com/samg/diffy) to permit the latest version.
- [Release notes](https://github.com/samg/diffy/releases)
- [Changelog](https://github.com/samg/diffy/blob/main/CHANGELOG)
- [Commits](https://github.com/samg/diffy/commits)

---
updated-dependencies:
- dependency-name: diffy
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
athityakumar/colorls,athityakumar/colorls