build(deps): bump sphinx in the doc-dependencies group

Bumps the doc-dependencies group with 1 update: [sphinx](https://github.com/sphinx-doc/sphinx).


Updates `sphinx` from 8.2.1 to 8.2.3
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v8.2.1...v8.2.3)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: doc-dependencies
...

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

Author: dependabot[bot]

pyproject.toml

@@ -47,7 +47,7 @@ doc = [
     "jupytext==1.16.7",
     "nbsphinx==0.9.6",
     "numpydoc==1.8.0",
-    "sphinx==8.2.1",
+    "sphinx==8.2.3",
     "sphinx-autoapi==3.6.0",
     "sphinx-copybutton==0.5.2",
     "sphinx_design==0.6.1",