Bump sphinx-autobuild from 2021.3.14 to 2024.2.4 (#1322)

Bumps [sphinx-autobuild](https://github.com/sphinx-doc/sphinx-autobuild) from 2021.3.14 to 2024.2.4.
- [Release notes](https://github.com/sphinx-doc/sphinx-autobuild/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx-autobuild/blob/main/NEWS.rst)
- [Commits](https://github.com/sphinx-doc/sphinx-autobuild/compare/2021.03.14...2024.02.04)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kevin Burnett <18027+burnettk@users.noreply.github.com>

docs/requirements.txt

@@ -34,7 +34,7 @@ snowballstemmer==2.2.0
 soupsieve==2.5
 Sphinx==7.2.6
 sphinx-autoapi==2.1.0
-sphinx-autobuild==2021.3.14
+sphinx-autobuild==2024.2.4
 sphinx-basic-ng==1.0.0b2
 sphinx-click==4.3.0
 sphinx-rtd-theme==2.0.0