Bump platformdirs from 3.11.0 to 4.0.0

Bumps [platformdirs](https://github.com/platformdirs/platformdirs) from 3.11.0 to 4.0.0.
- [Release notes](https://github.com/platformdirs/platformdirs/releases)
- [Changelog](https://github.com/platformdirs/platformdirs/blob/main/CHANGES.rst)
- [Commits](tox-dev/platformdirs@3.11.0...4.0.0)

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

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

requirements.txt

@@ -16,7 +16,7 @@ mccabe==0.7.0
 mypy-extensions==1.0.0
 packaging==23.2
 pathspec==0.11.2
-platformdirs==3.11.0
+platformdirs==4.0.0
 PyLink==0.3.3
 pylint==2.17.5
 pyserial==3.5