Bump sphinx-rtd-theme from 2.0.0 to 3.0.2

Bumps [sphinx-rtd-theme](https://github.com/readthedocs/sphinx_rtd_theme) from 2.0.0 to 3.0.2.
- [Changelog](https://github.com/readthedocs/sphinx_rtd_theme/blob/master/docs/changelog.rst)
- [Commits](readthedocs/sphinx_rtd_theme@2.0.0...3.0.2)

---
updated-dependencies:
- dependency-name: sphinx-rtd-theme
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pyproject.toml

@@ -66,7 +66,7 @@ dev = [
   "mypy==v1.13.0 ; python_version>='3.8'",
   # Docs.
   "Sphinx==7.3.7 ; python_version>='3.9'",
-  "sphinx-rtd-theme==2.0.0 ; python_version>='3.9'",
+  "sphinx-rtd-theme==3.0.2 ; python_version>='3.9'",
 ]
 
 [project.urls]