chore(deps-dev): update sphinx-rtd-theme requirement

Updates the requirements on [sphinx-rtd-theme](https://github.com/readthedocs/sphinx_rtd_theme) to permit the latest version.
- [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-version: 3.0.2
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -50,7 +50,7 @@ types-pytz>=2024.1.0,<2025.0.0
 
 # Documentation
 sphinx>=7.0.0,<8.0.0
-sphinx-rtd-theme>=2.0.0,<3.0.0
+sphinx-rtd-theme>=2.0.0,<4.0.0
 sphinx-autodoc-typehints>=2.0.0,<3.0.0
 
 # Performance Testing