Bump sphinx-rtd-theme from 1.2.0 to 3.0.2 in /requirements/CI

Bumps [sphinx-rtd-theme](https://github.com/readthedocs/sphinx_rtd_theme) from 1.2.0 to 3.0.2.
- [Changelog](https://github.com/readthedocs/sphinx_rtd_theme/blob/master/docs/changelog.rst)
- [Commits](readthedocs/sphinx_rtd_theme@1.2.0...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]>

requirements/CI/requirements.txt

@@ -7,7 +7,7 @@ setuptools-scm==8.1.0
 sphinx==5.0.2
 sphinx-argparse==0.4.0
 sphinx-issues==3.0.1
-sphinx_rtd_theme==1.2.0
+sphinx_rtd_theme==3.0.2
 sphinxcontrib-programoutput==0.18
 attrs==24.2.0
 appdirs==1.4.4