deps: update dependency platformdirs to v4.3.6 (#3209)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [platformdirs](https://redirect.github.com/tox-dev/platformdirs)
([changelog](https://redirect.github.com/tox-dev/platformdirs/releases))
| `==4.3.3` -> `==4.3.6` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/platformdirs/4.3.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/platformdirs/4.3.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/platformdirs/4.3.3/4.3.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/platformdirs/4.3.3/4.3.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

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---

### Release Notes

<details>
<summary>tox-dev/platformdirs (platformdirs)</summary>

###
[`v4.3.6`](https://redirect.github.com/tox-dev/platformdirs/releases/tag/4.3.6)

[Compare
Source](https://redirect.github.com/tox-dev/platformdirs/compare/4.3.5...4.3.6)

<!-- Release notes generated using configuration in .github/release.yml
at main -->

#### What's Changed

- Fix readme download target by
[@&#8203;gaborbernat](https://redirect.github.com/gaborbernat) in
[https://github.com/tox-dev/platformdirs/pull/307](https://redirect.github.com/tox-dev/platformdirs/pull/307)

**Full Changelog**:
tox-dev/platformdirs@4.3.5...4.3.6

###
[`v4.3.5`](https://redirect.github.com/tox-dev/platformdirs/releases/tag/4.3.5)

[Compare
Source](https://redirect.github.com/tox-dev/platformdirs/compare/4.3.4...4.3.5)

<!-- Release notes generated using configuration in .github/release.yml
at main -->

#### What's Changed

- Split build and publish for release by
[@&#8203;gaborbernat](https://redirect.github.com/gaborbernat) in
[https://github.com/tox-dev/platformdirs/pull/306](https://redirect.github.com/tox-dev/platformdirs/pull/306)

**Full Changelog**:
tox-dev/platformdirs@4.3.4...4.3.5

###
[`v4.3.4`](https://redirect.github.com/tox-dev/platformdirs/releases/tag/4.3.4)

[Compare
Source](https://redirect.github.com/tox-dev/platformdirs/compare/4.3.3...4.3.4)

<!-- Release notes generated using configuration in .github/release.yml
at main -->

#### What's Changed

- Use upstream setup-uv with uv python by
[@&#8203;gaborbernat](https://redirect.github.com/gaborbernat) in
[https://github.com/tox-dev/platformdirs/pull/305](https://redirect.github.com/tox-dev/platformdirs/pull/305)

**Full Changelog**:
tox-dev/platformdirs@4.3.3...4.3.4

</details>

---

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---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/googleapis/sdk-platform-java).

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Author: renovate-bot

library_generation/requirements.txt

@@ -409,9 +409,9 @@ pathspec==0.12.1 \
     # via
     #   -r requirements.in
     #   black
-platformdirs==4.3.3 \
-    --hash=sha256:50a5450e2e84f44539718293cbb1da0a0885c9d14adf21b77bae4e66fc99d9b5 \
-    --hash=sha256:d4e0b7d8ec176b341fb03cb11ca12d0276faa8c485f9cd218f613840463fc2c0
+platformdirs==4.3.6 \
+    --hash=sha256:357fb2acbc885b0419afd3ce3ed34564c13c9b95c89360cd9563f73aa5e2b907 \
+    --hash=sha256:73e575e1408ab8103900836b97580d5307456908a03e92031bab39e4554cc3fb
     # via
     #   black
     #   virtualenv