Bump sphinx-autodoc-typehints from 1.8.0 to 1.9.0
Bump sphinx-autodoc-typehints from 1.8.0 to 1.9.0

Bumps [sphinx-autodoc-typehints](https://github.com/agronholm/sphinx-autodoc-typehints) from 1.8.0 to 1.9.0.
- [Release notes](https://github.com/agronholm/sphinx-autodoc-typehints/releases)
- [Changelog](https://github.com/agronholm/sphinx-autodoc-typehints/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/agronholm/sphinx-autodoc-typehints/compare/1.8.0...1.9.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sedders123/phial