Bump sphinx-autodoc-typehints from 2.0.0 to 2.4.4

Bumps [sphinx-autodoc-typehints](https://github.com/tox-dev/sphinx-autodoc-typehints) from 2.0.0 to 2.4.4.
- [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@2.0.0...2.4.4)

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

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

requirements/requirements_docs.txt

@@ -13,5 +13,5 @@ sphinx-copybutton==0.5.0
 sphinx-gallery==0.17.1
 ansys_sphinx_theme==1.0.10
 sphinx-autodoc-typehints==2.0.0; python_version == '3.8'
-sphinx-autodoc-typehints==2.4.1; python_version >= '3.9'
+sphinx-autodoc-typehints==2.4.4; python_version >= '3.9'
 pyvista==0.44.1