Chore(deps-dev): Update sphinx-design-elements requirement

Updates the requirements on [sphinx-design-elements](https://github.com/panodata/sphinx-design-elements) to permit the latest version.
- [Release notes](https://github.com/panodata/sphinx-design-elements/releases)
- [Changelog](https://github.com/pyveci/sphinx-design-elements/blob/main/CHANGES.md)
- [Commits](tech-writing/sphinx-design-elements@v0.1.0...v0.3.0)

---
updated-dependencies:
- dependency-name: sphinx-design-elements
  dependency-type: direct:production
...

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

pyproject.toml

@@ -102,7 +102,7 @@ docs = [
   "sphinx<7.3",
   "sphinx-autobuild==2024.2.4",
   "sphinx-copybutton<0.6",
-  "sphinx-design-elements<0.3",
+  "sphinx-design-elements<0.4",
 ]
 release = [
   "build<2",