Bump sphinx from 7.2.6 to 7.3.5

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.2.6 to 7.3.5.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.2.6...v7.3.5)

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

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

Pipfile

@@ -13,5 +13,5 @@ pytest-cov = "==5.0.0"
 mypy = "==1.9.0"
 black = {version = "==24.4.0", markers="python_version >= '3.8'"}
 tbump = "==6.11.0"
-sphinx = {version = "==7.2.6", markers="python_version >= '3.9'"}
+sphinx = {version = "==7.3.5", markers="python_version >= '3.9'"}
 ruff = "==0.3.7"