Bump del from 6.0.0 to 6.1.1 in /example

Bumps [del](https://github.com/sindresorhus/del) from 6.0.0 to 6.1.1.
- [Release notes](https://github.com/sindresorhus/del/releases)
- [Commits](sindresorhus/del@v6.0.0...v6.1.1)

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

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