Bump black from 23.11.0 to 24.3.0 in /docs

Bumps [black](https://github.com/psf/black) from 23.11.0 to 24.3.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@23.11.0...24.3.0)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:development
...

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

Author: dependabot[bot]

docs/requirements-dev.txt

@@ -1,5 +1,5 @@
 aiounittest==1.4.2
-black==23.11.0
+black==24.3.0
 build==1.0.3
 coverage[toml]==7.2.7
 flit==3.9.0