chore(deps): update sphinx-design requirement from >=0.6 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-version: 0.6.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -2,4 +2,4 @@ sphinx>=7.2
 furo>=2024.1.29
 sphinx-copybutton>=0.5
 myst-parser>=3.0
-sphinx-design>=0.6
+sphinx-design>=0.6.1