Bump mkdocs from 1.1.2 to 1.2.3 (#7)

Bumps [mkdocs](https://github.com/mkdocs/mkdocs) from 1.1.2 to 1.2.3.
- [Release notes](https://github.com/mkdocs/mkdocs/releases)
- [Commits](mkdocs/mkdocs@1.1.2...1.2.3)

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

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

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

Author: dependabot[bot]

requirements-dev.txt

@@ -16,6 +16,6 @@ pytest-pylint==0.17.0
 flake8-annotations==2.4.0
 flake8-polyfill==1.0.2
 docformatter==1.4.0
-mkdocs==1.1.2
+mkdocs==1.2.3
 mkapi==1.0.14
 mkdocs-ivory==0.4.6