build(deps-dev): bump sphinx in the development-dependencies group

Bumps the development-dependencies group with 1 update: [sphinx](https://github.com/sphinx-doc/sphinx).


Updates `sphinx` from 7.3.7 to 7.4.3
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.3.7...v7.4.3)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: development-dependencies
...

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

Author: dependabot[bot]