Bump pymdown-extensions from 10.3 to 10.3.1

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 10.3 to 10.3.1.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](https://github.com/facelessuser/pymdown-extensions/compare/10.3...10.3.1)

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

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

docs/requirements-docs.txt

@@ -2,5 +2,5 @@ markdown==3.5
 mkdocs==1.5.3
 mkdocs-material==9.4.6
 mdx_truly_sane_lists==1.3
-pymdown-extensions==10.3
+pymdown-extensions==10.3.1
 jinja2==3.1.2