chore(deps): Bump pydantic-settings from 2.7.1 to 2.9.1

Bumps [pydantic-settings](https://github.com/pydantic/pydantic-settings) from 2.7.1 to 2.9.1.
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](https://github.com/pydantic/pydantic-settings/compare/v2.7.1...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>

requirements.txt

@@ -36,7 +36,7 @@ python-multipart==0.0.20
 sniffio==1.3.1
 starlette==0.46.2
 hypercorn==0.17.3
-pydantic-settings==2.7.1
+pydantic-settings==2.9.1
 
 # subs
 certbot==3.1.0