Bump black from 24.4.2 to 24.8.0 (quantbelt#287)

Bumps [black](https://github.com/psf/black) from 24.4.2 to 24.8.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@24.4.2...24.8.0)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -3,7 +3,7 @@ arch==7.0.0
 arviz==0.19.0
 bambi==0.14.0
 bcolz-zipline @ git+https://github.com/stefan-jansen/bcolz-zipline.git@main
-black==24.4.2
+black==24.8.0
 bottleneck==1.4.0
 dask[dataframe,distributed]==2024.7.1
 exchange_calendars==4.5.5