chore(deps): bump pydantic-settings

Bumps [pydantic-settings](https://github.com/pydantic/pydantic-settings) from 2.7.1 to 2.8.1.
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.7.1...v2.8.1)

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

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

Author: dependabot[bot]

api/terraform/python/layer_openai/requirements.txt

@@ -15,6 +15,6 @@ openai==1.61.0
 # general requirements
 # --------------------------
 pydantic==2.10.6
-pydantic-settings==2.7.1
+pydantic-settings==2.8.1
 python-dotenv==1.0.1
 python-hcl2==6.1.0