Bump mkdocs-material from 5.1.0 to 5.1.1 (#446)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 5.1.0 to 5.1.1.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@5.1.0...5.1.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Artem Malyshev <proofit404@gmail.com>

Author: dependabot-preview[bot]

poetry.lock

@@ -8,7 +8,7 @@ authors = ["Artem Malyshev <proofit404@gmail.com>"]
 python = "^3.8"
 ghp-import = "^0.5.5"
 mkdocs = "^1.1"
-mkdocs-material = "^5.1.0"
+mkdocs-material = "^5.1.1"
 
 [tool.poetry.dev-dependencies]
 dependencies = "^1.0"