Bump platformdirs from 4.1.0 to 4.2.0 in /requirements

Bumps [platformdirs](https://github.com/platformdirs/platformdirs) from 4.1.0 to 4.2.0.
- [Release notes](https://github.com/platformdirs/platformdirs/releases)
- [Changelog](https://github.com/platformdirs/platformdirs/blob/main/CHANGES.rst)
- [Commits](tox-dev/platformdirs@4.1.0...4.2.0)

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

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

requirements/lint.txt

@@ -16,7 +16,7 @@ mypy==1.8.0
 regex==2023.12.25
 packaging==23.2
 pathspec==0.12.1
-platformdirs==4.1.0
+platformdirs==4.2.0
 pyflakes==3.2.0
 pycodestyle==2.9.1
 toml==0.10.2