Bump sphinx from 8.2.0 to 8.2.1 in /docs in the docs group

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


Updates `sphinx` from 8.2.0 to 8.2.1
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v8.2.1/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v8.2.0...v8.2.1)

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

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

Author: dependabot[bot]

docs/requirements.txt

@@ -1,3 +1,3 @@
-sphinx==8.2.0
+sphinx==8.2.1
 furo==2024.8.6
 myst_parser==4.0.1