chore(deps): bump pymdown-extensions from 12.2 to 12.3 in /docs/_build

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 12.2 to 12.3.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](https://github.com/facelessuser/pymdown-extensions/compare/12.2...12.3)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-version: '12.3'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

docs/_build/requirements.txt

@@ -12,7 +12,7 @@ mkdocs-material==9.7.7
 mkdocs-material-extensions==1.3.1
 packaging==26.3
 Pygments==2.21.0
-pymdown-extensions==12.2
+pymdown-extensions==12.3
 pyparsing==3.3.3
 python-dateutil==2.9.0.post0
 PyYAML==6.0.3