Bump pymdown-extensions from 9.9.2 to 9.10

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 9.9.2 to 9.10.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@9.9.2...9.10)

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

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

requirements.txt

@@ -1,4 +1,4 @@
 mkdocs==1.4.2
 mkdocs-material==9.0.15
 pygments==2.14.0
-pymdown-extensions==9.9.2
+pymdown-extensions==9.10