Bump stylus from 0.63.0 to 0.64.0

Bumps [stylus](https://github.com/stylus/stylus) from 0.63.0 to 0.64.0.
- [Release notes](https://github.com/stylus/stylus/releases)
- [Changelog](https://github.com/stylus/stylus/blob/dev/Changelog.md)
- [Commits](stylus/stylus@0.63.0...0.64.0)

---
updated-dependencies:
- dependency-name: stylus
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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