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/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.2.6...v8.1.3)

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

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

pyproject.toml

@@ -57,7 +57,7 @@ all = [
 dev = [
   "ruff==0.4.0",
   "pre-commit",
-  "sphinx==7.2.6",
+  "sphinx==8.1.3",
   "sphinx-theme-pd==0.8.3",
   "sphinxawesome-theme",
   "pytest",