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)
- [Changelog](https://github.com/tox-dev/sphinx-autodoc-typehints/blob/main/CHANGELOG.md)
- [Commits](tox-dev/sphinx-autodoc-typehints@2.2.2...2.5.0)

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

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

requirements/documentation.txt

@@ -2,7 +2,7 @@ furo>=2024
 matplotlib>=3.8,<4
 myst-parser[linkify]>=2
 sphinx-autobuild>=2021
-sphinx-autodoc-typehints>=2.2.2,<2.5
+sphinx-autodoc-typehints>=2.2.2,<2.6
 sphinx-click>=5
 sphinx-copybutton<1
 sphinx-design>=0.5,<1