build(deps-dev): bump del-cli from 5.1.0 to 6.0.0

Bumps [del-cli](https://github.com/sindresorhus/del-cli) from 5.1.0 to 6.0.0.
- [Release notes](https://github.com/sindresorhus/del-cli/releases)
- [Commits](sindresorhus/del-cli@v5.1.0...v6.0.0)

---
updated-dependencies:
- dependency-name: del-cli
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]