chore(deps): bump mkdocstrings from 0.27.0 to 0.28.0

Bumps [mkdocstrings](https://github.com/mkdocstrings/mkdocstrings) from 0.27.0 to 0.28.0.
- [Release notes](https://github.com/mkdocstrings/mkdocstrings/releases)
- [Changelog](https://github.com/mkdocstrings/mkdocstrings/blob/main/CHANGELOG.md)
- [Commits](mkdocstrings/mkdocstrings@0.27.0...0.28.0)

---
updated-dependencies:
- dependency-name: mkdocstrings
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

poetry.lock

@@ -26,7 +26,7 @@ python-slugify = "^8.0.0"
 [tool.poetry.group.dev.dependencies]
 freezegun = "^1.2.2"
 Markdown = "^3.3"
-mkdocstrings = {extras = ["python"], version = ">=0.20,<0.28"}
+mkdocstrings = {extras = ["python"], version = ">=0.20,<0.29"}
 mkdocs-material = ">=8,<10"
 mkdocs = "^1.4.2"
 mkdocs-gen-files = ">=0.4,<0.6"