Bump black from 22.6.0 to 22.8.0 in /requirements

Bumps [black](https://github.com/psf/black) from 22.6.0 to 22.8.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@22.6.0...22.8.0)

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

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

Author: dependabot[bot]

requirements/requirements_build.txt

@@ -1,3 +1,3 @@
 wheel==0.37.1
 chevron==0.14.0
-black==22.6.0
+black==22.8.0