Bump ruff from 0.6.3 to 0.6.4 in /requirements (#1072)

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.6.3 to 0.6.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](https://github.com/astral-sh/ruff/compare/0.6.3...0.6.4)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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