build(deps): update sphinx-autodoc-typehints requirement

Updates the requirements on [sphinx-autodoc-typehints](https://github.com/tox-dev/sphinx-autodoc-typehints) to permit the latest version.
- [Release notes](https://github.com/tox-dev/sphinx-autodoc-typehints/releases)
- [Commits](tox-dev/sphinx-autodoc-typehints@1.8.0...2.3.0)

---
updated-dependencies:
- dependency-name: sphinx-autodoc-typehints
  dependency-version: 2.3.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements-docs.txt

@@ -1,5 +1,5 @@
 gevent
 shibuya
 sphinx<8.2
-sphinx-autodoc-typehints[type_comments]>=1.8.0
+sphinx-autodoc-typehints[type_comments]>=2.3.0
 typing-extensions