build: bump platformdirs from 4.3.3 to 4.3.6

Bumps [platformdirs](https://github.com/tox-dev/platformdirs) from 4.3.3 to 4.3.6.
- [Release notes](https://github.com/tox-dev/platformdirs/releases)
- [Changelog](https://github.com/tox-dev/platformdirs/blob/main/CHANGES.rst)
- [Commits](tox-dev/platformdirs@4.3.3...4.3.6)

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

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

requirements.txt

@@ -132,7 +132,7 @@ pathspec==0.12.1
     # via black
 pip-tools==7.4.1
     # via rocm-docs-core (pyproject.toml)
-platformdirs==4.3.3
+platformdirs==4.3.6
     # via
     #   black
     #   virtualenv