Bump sphinx from 5.0.2 to 7.2.4 in /requirements/CI

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.0.2 to 7.2.4.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v5.0.2...v7.2.4)

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

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

requirements/CI/requirements.txt

@@ -4,7 +4,7 @@ pytest==7.3.2
 pytest-cov==4.1.0
 pytest-xdist==3.3.1
 setuptools-scm==7.1.0
-sphinx==5.0.2
+sphinx==7.2.4
 sphinx-argparse==0.4.0
 sphinx-issues==3.0.1
 sphinx_rtd_theme==1.2.0