chore(deps): bump pydantic-settings from 2.5.2 to 2.6.0

Bumps [pydantic-settings](https://github.com/pydantic/pydantic-settings) from 2.5.2 to 2.6.0.
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.5.2...v2.6.0)

---
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]

requirements.txt

@@ -39,7 +39,7 @@ openai==1.43.0
 # ------------
 python-dotenv==1.0.1
 pydantic==2.8.2
-pydantic-settings==2.5.2
+pydantic-settings==2.6.0
 python-hcl2==4.3.4
 
 # Lambda layer: langchain