Bump sphinx from 9.0.3 to 9.0.4 (#97)

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 9.0.3 to 9.0.4.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v9.0.3...v9.0.4)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-version: 9.0.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -1,5 +1,5 @@
 build==1.3.0
-sphinx==9.0.3
+sphinx==9.0.4
 invoke==2.2.1
 invocations==4.0.2
 semantic-version==2.6.0