Bump the main group across 1 directory with 3 updates

Bumps the main group with 3 updates in the / directory: [pydantic](https://github.com/pydantic/pydantic), [pydantic-settings](https://github.com/pydantic/pydantic-settings) and [tomlkit](https://github.com/sdispater/tomlkit).


Updates `pydantic` from 2.7.1 to 2.8.2
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.7.1...v2.8.2)

Updates `pydantic-settings` from 2.2.1 to 2.3.4
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.2.1...v2.3.4)

Updates `tomlkit` from 0.12.5 to 0.13.0
- [Release notes](https://github.com/sdispater/tomlkit/releases)
- [Changelog](https://github.com/python-poetry/tomlkit/blob/master/CHANGELOG.md)
- [Commits](python-poetry/tomlkit@0.12.5...0.13.0)

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

Signed-off-by: dependabot[bot] <[email protected]>