Update sphinx-rtd-theme requirement from ^2.0.0 to ^3.0.0

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...3.0.0)

---
updated-dependencies:
- dependency-name: sphinx-rtd-theme
  dependency-type: direct:development
...

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

pyproject.toml

@@ -84,7 +84,7 @@ pre-commit = "^3.2.2"
 pytest = "^8.0.0"
 pytest-aiohttp = "^1.0.4"
 pytest-cov = "^5.0.0"
-sphinx-rtd-theme = "^2.0.0"
+sphinx-rtd-theme = "^3.0.0"
 types-pytz = "^2024.1.0"
 
 [tool.pylint.BASIC]