build(deps): bump boxen from 5.1.2 to 6.2.1

Bumps [boxen](https://github.com/sindresorhus/boxen) from 5.1.2 to 6.2.1.
- [Release notes](https://github.com/sindresorhus/boxen/releases)
- [Commits](sindresorhus/boxen@v5.1.2...v6.2.1)

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

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

Author: dependabot[bot]