Bump mkdocs-material from 8.3.8 to 8.3.9

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 8.3.8 to 8.3.9.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@8.3.8...8.3.9)

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

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

Author: dependabot[bot]

poetry.lock

@@ -18,7 +18,7 @@ gitpython = "^3.1.27"
 mdx_truly_sane_lists = "^1.2"
 mike = "^1.1.2"
 mkdocs = "^1.3.0"
-mkdocs-material = "^8.3.8"
+mkdocs-material = "^8.3.9"
 
 [tool.poetry.dev-dependencies]
 black = "^22.6"