chore(deps): bump sphinx from 7.2.6 to 8.1.3

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.2.6 to 8.1.3.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v8.1.3/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.2.6...v8.1.3)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-version: 8.1.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

poetry.lock

@@ -65,7 +65,7 @@ freezegun = "*"
 pytest = "*"
 pylint = "^3.3.9"
 ruff = "==0.13.3"
-Sphinx = "^7.3.7"
+Sphinx = "^8.1.3"
 sphinx-rtd-theme = "^3.0.2"
 pytest-cov = "^7.0.0"
 tox = "^3.28.0"