build(deps-dev): bump mkdocstrings from 0.19.1 to 0.20.0 (#1023)

Bumps [mkdocstrings](https://github.com/mkdocstrings/mkdocstrings) from 0.19.1 to 0.20.0.
- [Release notes](https://github.com/mkdocstrings/mkdocstrings/releases)
- [Changelog](https://github.com/mkdocstrings/mkdocstrings/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mkdocstrings/mkdocstrings/compare/0.19.1...0.20.0)

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

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

pyproject.toml

@@ -104,7 +104,7 @@ types-toml = "^0.10.8"
 mkdocs = "^1.4.2"
 mkdocs-material = ">=8.1.2,<8.6"
 mkdocs-material-extensions = "^1.1"
-mkdocstrings = {version = "==0.19.1", extras = ["python"]}
+mkdocstrings = {version = "==0.20.0", extras = ["python"]}
 mkdocs-gen-files = "^0.4.0"
 mkdocs-literate-nav = "^0.5.0"
 mkdocs-section-index = "^0.3.4"