build: bump platformdirs from 4.3.7 to 4.3.8 in /src/ContentProcessorAPI

Bumps [platformdirs](https://github.com/tox-dev/platformdirs) from 4.3.7 to 4.3.8.
- [Release notes](https://github.com/tox-dev/platformdirs/releases)
- [Changelog](https://github.com/tox-dev/platformdirs/blob/main/CHANGES.rst)
- [Commits](tox-dev/platformdirs@4.3.7...4.3.8)

---
updated-dependencies:
- dependency-name: platformdirs
  dependency-version: 4.3.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/ContentProcessorAPI/requirements.txt

@@ -224,9 +224,9 @@ msal-extensions==1.3.1 \
 nodeenv==1.9.1 \
     --hash=sha256:6ec12890a2dab7946721edbfbcd91f3319c6ccc9aec47be7c7e6b7011ee6645f \
     --hash=sha256:ba11c9782d29c27c70ffbdda2d7415098754709be8a7056d79a737cd901155c9
-platformdirs==4.3.7 \
-    --hash=sha256:a03875334331946f13c549dbd8f4bac7a13a50a895a0eb1e8c6a8ace80d40a94 \
-    --hash=sha256:eb437d586b6a0986388f0d6f74aa0cde27b48d0e3d66843640bfb6bdcdb6e351
+platformdirs==4.3.8 \
+    --hash=sha256:3d512d96e16bcb959a814c9f348431070822a6496326a4be0911c40b5a74c2bc \
+    --hash=sha256:ff7059bb7eb1179e2685604f4aaf157cfd9535242bd23742eadc3c13542139b4
 poppler-utils==0.1.0 \
     --hash=sha256:a6336b4c7d59e49d339b92c60d1f63905f577ab106038bde940a6861deefd3f3 \
     --hash=sha256:e97a92dcfde57b21a90c3070694e58f8eea155515ae8e624266a052d0776a349