build(deps): Update pymdown-extensions requirement

Updates the requirements on [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) to permit the latest version.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@7.0.0...11.0.1)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-version: '11.0'
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
 mkdocs>=1.1
-pymdown-extensions>=7.0
+pymdown-extensions>=11.0.1
 beautifulsoup4>=4.14.3
 packaging