chore(deps): bump sphinx from 8.0.2 to 8.1.3

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 8.0.2 to 8.1.3.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v8.0.2...v8.1.3)

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

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

requirements-dev.txt

@@ -9,7 +9,7 @@ pytest-env==1.1.5
 pytest-random-order==1.1.1
 pytest-ruff==0.4.1
 ruff==0.8.4
-sphinx==8.0.2
+sphinx==8.1.3
 twine==6.0.1
 types-mock==5.1.0.20240425
 types-pytz==2024.2.0.20241221