Bump sphinx-autodoc-typehints from 1.19.4 to 1.19.5 in /requirements (#1608)

Bumps [sphinx-autodoc-typehints](https://github.com/tox-dev/sphinx-autodoc-typehints) from 1.19.4 to 1.19.5.
- [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@1.19.4...1.19.5)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

requirements/requirements_docs.txt

@@ -16,7 +16,7 @@ pytest-sphinx==0.5.0
 pythreejs==2.4.1
 pyvista==0.36.1
 sphinx-autobuild==2021.3.14
-sphinx-autodoc-typehints==1.19.4
+sphinx-autodoc-typehints==1.19.5
 sphinx-copybutton==0.5.0
 sphinx-gallery==0.11.1
 sphinx-notfound-page==0.8.3