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: indirect
  update-type: version-update:semver-major
...

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

requirements/dev-requirements.txt

@@ -6,8 +6,6 @@
 #
 alabaster==0.7.13
     # via sphinx
-appnope==0.1.3
-    # via ipython
 asgiref==3.7.2
     # via
     #   -c requirements/requirements.txt
@@ -134,7 +132,7 @@ pexpect==4.8.0
     # via ipython
 pickleshare==0.7.5
     # via ipython
-platformdirs==3.11.0
+platformdirs==4.0.0
     # via
     #   black
     #   pylint