Bump xo from 0.54.2 to 0.56.0

Bumps [xo](https://github.com/xojs/xo) from 0.54.2 to 0.56.0.
- [Release notes](https://github.com/xojs/xo/releases)
- [Commits](xojs/xo@v0.54.2...v0.56.0)

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

Signed-off-by: dependabot[bot] <support@github.com>