MAINT: 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] <[email protected]>

pyproject.toml

@@ -52,7 +52,7 @@ tests = [
     "grpcio-health-checking==1.48.2",
     "numpy==2.1.1",
     "pandas==2.2.2",
-    "platformdirs==4.3.3",
+    "platformdirs==4.3.6",
     "protobuf==5.28.1",
     "six==1.16.0",
     "tqdm==4.66.5",