chore(deps): bump sphinx from 5.3.0 to 6.1.3 in /py-polars

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.3.0 to 6.1.3.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v5.3.0...v6.1.3)

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

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

py-polars/docs/requirements-docs.txt

@@ -14,7 +14,7 @@ pydata-sphinx-theme==0.12.0
 sphinx-autosummary-accessors==2022.4.0
 sphinx-copybutton==0.5.1
 sphinx-design==0.3.0
-sphinx==5.3.0
+sphinx==6.1.3
 sphinxcontrib-applehelp==1.0.2
 sphinxcontrib-devhelp==1.0.2
 sphinxcontrib-htmlhelp==2.0.0