deps: Bump pymdown-extensions from 10.21.3 to 11.0 (#42)

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 10.21.3 to 11.0.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@10.21.3...11.0)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-version: '11.0'
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]