build(deps): bump sphinx from 4.2.0 to 4.3.0 (#661)

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 4.2.0 to 4.3.0.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/4.x/CHANGES)
- [Commits](sphinx-doc/sphinx@v4.2.0...v4.3.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-docs.txt

@@ -1,5 +1,5 @@
 ipython==7.29.0
-Sphinx==4.2.0
+Sphinx==4.3.0
 sphinxcontrib-fulltoc==1.2.0
 nbsphinx==0.8.7