Bump mkdocs-material from 9.6.19 to 9.6.20 in the pip-dependencies group

Bumps the pip-dependencies group with 1 update: [mkdocs-material](https://github.com/squidfunk/mkdocs-material).


Updates `mkdocs-material` from 9.6.19 to 9.6.20
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.6.19...9.6.20)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-version: 9.6.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pip-dependencies
...

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

Author: dependabot[bot]

poetry.lock

@@ -16,7 +16,7 @@ mkdocs-extra-sass-plugin = "^0.1.0"
 mkdocs-static-i18n = "^1.2.3"
 mkdocs-markdownextradata-plugin = "^0.2.5"
 mkdocs-material-extensions = "^1.3.1"
-mkdocs-material = "^9.6.19"
+mkdocs-material = "^9.6.20"
 
 [build-system]
 requires = ["poetry-core"]