build(deps): bump sphinx-design from 0.6.0 to 0.6.1 in /requirements (#486)

Bumps [sphinx-design](https://github.com/executablebooks/sphinx-design) from 0.6.0 to 0.6.1.
- [Release notes](https://github.com/executablebooks/sphinx-design/releases)
- [Changelog](https://github.com/executablebooks/sphinx-design/blob/main/CHANGELOG.md)
- [Commits](executablebooks/sphinx-design@v0.6.0...v0.6.1)

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

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

Author: dependabot[bot]

requirements/requirements_doc.txt

@@ -2,7 +2,7 @@ Sphinx==7.2.6
 ansys-sphinx-theme==0.16.6
 sphinx-copybutton==0.5.2
 sphinx_toolbox==3.7.0
-sphinx_design==0.6.0
+sphinx_design==0.6.1
 sphinxcontrib-mermaid>=0.7.1
 sphinx-gallery==0.17.0
 Pillow>=9.0