Bump xo from 0.39.1 to 0.40.2

Bumps [xo](https://github.com/xojs/xo) from 0.39.1 to 0.40.2.
- [Release notes](https://github.com/xojs/xo/releases)
- [Commits](xojs/xo@v0.39.1...v0.40.2)

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

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