Bump sphinx-autobuild from 2024.9.3 to 2024.9.19 (#1290)

Bumps [sphinx-autobuild](https://github.com/sphinx-doc/sphinx-autobuild) from 2024.9.3 to 2024.9.19.
- [Release notes](https://github.com/sphinx-doc/sphinx-autobuild/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx-autobuild/blob/main/NEWS.rst)
- [Commits](sphinx-doc/sphinx-autobuild@2024.09.03...2024.09.19)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/requirements-docs.txt

@@ -1,3 +1,3 @@
 furo==2024.8.6
 Sphinx==8.0.2
-sphinx-autobuild==2024.9.3
+sphinx-autobuild==2024.9.19