Update sphinx to 9.0.4

[pyup-bot]

This PR updates sphinx from 9.0.3 to 9.0.4.

Changelog

9.0.4

==============================

Bugs fixed
----------

* 14143: Fix spurious build warnings when translators reorder references
in strings, or use translated display text in references.
Patch by Matt Wang.

Links

• PyPI: https://pypi.org/project/sphinx
• Changelog: https://data.safetycli.com/changelogs/sphinx/