[Dependabot]: Update sphinx-design requirement from ~=0.6.0 to ~=0.6.1

Updates the requirements on [sphinx-design](https://github.com/executablebooks/sphinx-design) to permit the latest version.
- [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
...

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

doc/requirements.txt

@@ -19,7 +19,7 @@ sphinxcontrib-mermaid >= 0.9.2
 #sphinxcontrib-textstyle>=0.2.1
 #sphinxcontrib-spelling>=2.2.0
 autoapi >= 2.0.1
-sphinx_design ~= 0.6.0
+sphinx_design ~= 0.6.1
 sphinx-copybutton >= 0.5.2
 sphinx_autodoc_typehints ~= 2.4
 # changelog>=0.3.5