Update pydantic-settings to 2.2.1

[pyup-bot]

This PR updates pydantic-settings from 2.2.0 to 2.2.1.

Changelog

2.2.1

What's Changed
* respect `env_prefix` when `extra` allowed by zzstoatzz in https://github.com/pydantic/pydantic-settings/pull/238
* Replace tomlkit with tomli and remove toml_file_encoding config by hramezani in https://github.com/pydantic/pydantic-settings/pull/236
* Revert "Allow nested env var source to override nested init source." by hramezani in https://github.com/pydantic/pydantic-settings/pull/243

New Contributors
* zzstoatzz made their first contribution in https://github.com/pydantic/pydantic-settings/pull/238

**Full Changelog**: https://github.com/pydantic/pydantic-settings/compare/v2.2.0...v2.2.1

Links

• PyPI: https://pypi.org/project/pydantic-settings
• Changelog: https://data.safetycli.com/changelogs/pydantic-settings/