build(deps): update pydantic-settings requirement in /pywry/docs (#28)

Updates the requirements on [pydantic-settings](https://github.com/pydantic/pydantic-settings) to permit the latest version.
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.0.0...v2.14.0)

---
updated-dependencies:
- dependency-name: pydantic-settings
  dependency-version: 2.14.0
  dependency-type: direct:production
...

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Co-authored-by: Danglewood <85772166+deeleeramone@users.noreply.github.com>

Author: dependabot[bot]

pywry/docs/requirements.txt

@@ -14,4 +14,4 @@ mkdocs-section-index>=0.3.12
 
 # Needed for building docs (dependencies of pywry)
 pydantic>=2.0
-pydantic-settings>=2.0
+pydantic-settings>=2.14.0