⬆️ Bump sphinx-design from 0.2.0 to 0.3.0 in /docs

Bumps [sphinx-design](https://github.com/executablebooks/sphinx-design) from 0.2.0 to 0.3.0.
- [Release notes](https://github.com/executablebooks/sphinx-design/releases)
- [Changelog](https://github.com/executablebooks/sphinx-design/blob/main/CHANGELOG.md)
- [Commits](executablebooks/sphinx-design@v0.2.0...v0.3.0)

---
updated-dependencies:
- dependency-name: sphinx-design
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

docs/requirements.txt

@@ -3,7 +3,7 @@ myst-parser==0.18.0
 sphinx-autodoc-typehints==1.19.2
 sphinx-click==4.3.0
 sphinx-copybutton==0.5.0
-sphinx-design==0.2.0
+sphinx-design==0.3.0
 sphinx-favicon==0.2
 sphinx==5.1.1
 sphinxext-opengraph==0.6.3