build(deps): bump black from 25.1.0 to 25.9.0 in /requirements

Bumps [black](https://github.com/psf/black) from 25.1.0 to 25.9.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@25.1.0...25.9.0)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 25.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/requirements_build.txt

@@ -1,4 +1,4 @@
-black==25.1.0
+black==25.9.0
 build==1.3.0
 chevron==0.14.0
 pypandoc_binary==1.15