Bump pymdown-extensions from 3.3.2 to 8.2

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 3.3.2 to 8.2.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](https://github.com/facelessuser/pymdown-extensions/commits/8.2)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

docs/requirements.txt

@@ -1,6 +1,6 @@
 mkdocs==1.1.2
 mkdocs-material==6.1.0
-pymdown-extensions==3.3.2
+pymdown-extensions==8.2
 mkdocs-macros-plugin==0.4.18
 mkdocs-awesome-pages-plugin==2.4.0
 mkdocs-redirects==1.0.1