Bump sphinx-autodoc-typehints from 1.25.2 to 2.0.0

Bumps [sphinx-autodoc-typehints](https://github.com/tox-dev/sphinx-autodoc-typehints) from 1.25.2 to 2.0.0.
- [Release notes](https://github.com/tox-dev/sphinx-autodoc-typehints/releases)
- [Changelog](https://github.com/tox-dev/sphinx-autodoc-typehints/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tox-dev/sphinx-autodoc-typehints/compare/1.25.2...2.0.0)