build(deps): bump the mkdocs-deps group (#4352)

Bumps the mkdocs-deps group in /hack/mkdocs/image with 2 updates: [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) and [tornado](https://github.com/tornadoweb/tornado).


Updates `pymdown-extensions` from 10.18 to 10.19.1
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@10.18...10.19.1)

Updates `tornado` from 6.5.2 to 6.5.3
- [Changelog](https://github.com/tornadoweb/tornado/blob/master/docs/releases.rst)
- [Commits](tornadoweb/tornado@v6.5.2...v6.5.3)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-version: 10.19.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: mkdocs-deps
- dependency-name: tornado
  dependency-version: 6.5.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: mkdocs-deps
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

hack/mkdocs/image/requirements.txt

@@ -16,9 +16,9 @@ mkdocs-mermaid2-plugin==1.2.3
 pandas>=2.0.3
 pep562==1.1
 Pygments==2.19.2
-pymdown-extensions==10.18
+pymdown-extensions==10.19.1
 PyYAML==6.0.3
 six==1.17.0
 tabulate==0.9.0
-tornado==6.5.2
+tornado==6.5.3
 semver==3.0.4