Update pydantic-settings to 2.6.0

[pyup-bot]

This PR updates pydantic-settings from 2.5.2 to 2.6.0.

Changelog

2.6.0

What's Changed
* Fix nested model field with alias parsing by hramezani in https://github.com/pydantic/pydantic-settings/pull/400
* Fix PathType typing in case of sequence by just-maiyak in https://github.com/pydantic/pydantic-settings/pull/402
* Add `cli_ignore_unknown_args` config option. by kschwab in https://github.com/pydantic/pydantic-settings/pull/405
* Fix AzureKeyVaultSettingsSource problem in case of field with underscore by hramezani in https://github.com/pydantic/pydantic-settings/pull/415
* Add `cli_flag_prefix_char` config option. by kschwab in https://github.com/pydantic/pydantic-settings/pull/418
* Fix nested model AliasChoices in validation alias by hramezani in https://github.com/pydantic/pydantic-settings/pull/411
* Add CLI App Support by kschwab in https://github.com/pydantic/pydantic-settings/pull/389
* Fix context not passed to field validators bug by hramezani in https://github.com/pydantic/pydantic-settings/pull/417
* Fix a regression in dotenv optional nested field by hramezani in https://github.com/pydantic/pydantic-settings/pull/423
* Put tests for non-default sources in separate files by makukha in https://github.com/pydantic/pydantic-settings/pull/429
* Update nested model partial update docs example. by kschwab in https://github.com/pydantic/pydantic-settings/pull/433
* Add support for suppressing fields from CLI help. by kschwab in https://github.com/pydantic/pydantic-settings/pull/436
* Fix bug in dotenv source when there is env with and without prefix by hramezani in https://github.com/pydantic/pydantic-settings/pull/440
* Prepare release 2.6.0 by hramezani in https://github.com/pydantic/pydantic-settings/pull/444

New Contributors
* just-maiyak made their first contribution in https://github.com/pydantic/pydantic-settings/pull/402

**Full Changelog**: https://github.com/pydantic/pydantic-settings/compare/v2.5.2...v2.6.0

Links

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