build(deps): update mkdocstrings-python requirement

Updates the requirements on [mkdocstrings-python](https://github.com/mkdocstrings/python) to permit the latest version.
- [Release notes](https://github.com/mkdocstrings/python/releases)
- [Changelog](https://github.com/mkdocstrings/python/blob/main/CHANGELOG.md)
- [Commits](mkdocstrings/python@1.16.2...1.18.2)

---
updated-dependencies:
- dependency-name: mkdocstrings-python
  dependency-version: 1.18.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements/documentation.txt

@@ -5,5 +5,5 @@ mkdocs-git-committers-plugin-2>=2.4.1,<2.6
 mkdocs-git-revision-date-localized-plugin>=1.3,<1.5
 mkdocs-material[imaging]>=9.5.47,<10
 mkdocs-minify-plugin>=0.8,<0.9
-mkdocstrings-python>=1.16.2,<1.17
+mkdocstrings-python>=1.16.2,<1.19
 termynal>=0.12.2,<0.14