Update mkdocs-material requirement from 9.5.12 to 9.5.14

Updates the requirements on [mkdocs-material](https://github.com/squidfunk/mkdocs-material) to permit the latest version.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.5.12...9.5.14)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:development
...

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

pyproject.toml

@@ -103,7 +103,7 @@ optional = true
 
 [tool.poetry.group.docs.dependencies]
 mkdocs = "1.5.3"
-mkdocs-material = "9.5.12"
+mkdocs-material = "9.5.14"
 
 [tool.poetry.group.docs.dependencies.mkdocstrings]
 version = "0.24.0"