Bump sphinx from 7.3.7 to 8.0.2 in /core

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.3.7 to 8.0.2.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v8.0.2/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.3.7...v8.0.2)

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

Signed-off-by: dependabot[bot] <support@github.com>

core/pyproject.toml

@@ -86,7 +86,7 @@ docs = [
     "furo == 2024.7.18",
     "Pillow == 10.4.0",
     "pyenchant == 3.2.2",
-    "sphinx == 7.3.7",
+    "sphinx == 8.0.2",
     "sphinx_tabs == 3.4.5",
     "sphinx-autobuild == 2024.4.16",
     "sphinx-csv-filter == 0.4.1",