Update mkdocstrings[python] requirement from ~=0.22.0 to ~=0.23.0

Updates the requirements on [mkdocstrings[python]](https://github.com/mkdocstrings/mkdocstrings) to permit the latest version.
- [Release notes](https://github.com/mkdocstrings/mkdocstrings/releases)
- [Changelog](https://github.com/mkdocstrings/mkdocstrings/blob/main/CHANGELOG.md)
- [Commits](mkdocstrings/mkdocstrings@0.22.0...0.23.0)

---
updated-dependencies:
- dependency-name: mkdocstrings[python]
  dependency-type: direct:production
...

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

requirements_docs.txt

@@ -4,4 +4,4 @@ mkdocs~=1.5
 mkdocs-awesome-pages-plugin~=2.9
 mkdocs-material~=9.2
 mkdocs-minify-plugin~=0.7.1
-mkdocstrings[python]~=0.22.0
+mkdocstrings[python]~=0.23.0