Bump sphinx-autodoc-typehints from 1.12.0 to 2.1.0 (#841)

Bumps [sphinx-autodoc-typehints](https://github.com/tox-dev/sphinx-autodoc-typehints) from 1.12.0 to 2.1.0.
- [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](tox-dev/sphinx-autodoc-typehints@1.12.0...2.1.0)

---
updated-dependencies:
- dependency-name: sphinx-autodoc-typehints
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/doc.txt

@@ -1,4 +1,4 @@
 alabaster==0.7.16
 sphinx==7.3.7
-sphinx-autodoc-typehints==1.12.0
+sphinx-autodoc-typehints==2.1.0
 sphinxcontrib-asyncio==0.3.0