Bump platformdirs from 3.0.0 to 3.9.1

Bumps [platformdirs](https://github.com/platformdirs/platformdirs) from 3.0.0 to 3.9.1.
- [Release notes](https://github.com/platformdirs/platformdirs/releases)
- [Changelog](https://github.com/platformdirs/platformdirs/blob/main/CHANGES.rst)
- [Commits](tox-dev/platformdirs@3.0.0...3.9.1)

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

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

requirements.txt

@@ -67,7 +67,7 @@ pickleshare
 pika==0.13.0
 Pillow==9.4.0
 pip-upgrader==1.4.15
-platformdirs==3.0.0
+platformdirs==3.9.1
 pluggy==1.0.0
 preshed==3.0.8
 prompt-toolkit==3.0.37