build: bump pydantic-settings in /src/ContentProcessorAPI

Bumps [pydantic-settings](https://github.com/pydantic/pydantic-settings) from 2.8.0 to 2.9.1.
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.8.0...v2.9.1)

---
updated-dependencies:
- dependency-name: pydantic-settings
  dependency-version: 2.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/ContentProcessorAPI/requirements.txt

@@ -262,9 +262,9 @@ pydantic-core==2.27.2 \
     --hash=sha256:eb026e5a4c1fee05726072337ff51d1efb6f59090b7da90d30ea58625b1ffb39 \
     --hash=sha256:eda3f5c2a021bbc5d976107bb302e0131351c2ba54343f8a496dc8783d3d3a6a \
     --hash=sha256:fa8e459d4954f608fa26116118bb67f56b93b209c39b008277ace29937453dc9
-pydantic-settings==2.8.0 \
-    --hash=sha256:88e2ca28f6e68ea102c99c3c401d6c9078e68a5df600e97b43891c34e089500a \
-    --hash=sha256:c782c7dc3fb40e97b238e713c25d26f64314aece2e91abcff592fcac15f71820
+pydantic-settings==2.9.1 \
+    --hash=sha256:59b4f431b1defb26fe620c71a7d3968a710d719f5f4cdbbdb7926edeb770f6ef \
+    --hash=sha256:c509bf79d27563add44e8446233359004ed85066cd096d8b510f715e6ef5d268
 pygments==2.19.1 \
     --hash=sha256:61c16d2a8576dc0649d9f39e089b5f02bcd27fba10d8fb4dcc28173f7a45151f \
     --hash=sha256:9ea1544ad55cecf4b8242fab6dd35a93bbce657034b0611ee383099054ab6d8c