Bump mdformat-mkdocs[recommended] from 2.0.6 to 2.0.9 (#634)

Bumps [mdformat-mkdocs[recommended]](https://github.com/kyleking/mdformat-mkdocs) from 2.0.6 to 2.0.9.
- [Release notes](https://github.com/kyleking/mdformat-mkdocs/releases)
- [Commits](KyleKing/mdformat-mkdocs@v2.0.6...v2.0.9)

---
updated-dependencies:
- dependency-name: mdformat-mkdocs[recommended]
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -6,7 +6,7 @@ mkdocs-redirects==1.2.1
 pymdown-extensions==10.7.1
 mkdocs-linkcheck==1.0.6
 mdformat-gfm==0.3.6
-mdformat-mkdocs[recommended]==2.0.6
+mdformat-mkdocs[recommended]==2.0.9
 beautifulsoup4==4.12.3
 diskcache==5.6.3
 sendgrid==6.11.0