Bump black from 25.11.0 to 26.5.1

Bumps [black](https://github.com/psf/black) from 25.11.0 to 26.5.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@25.11.0...26.5.1)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 26.5.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]