build(deps-dev): bump utf-8-validate from 6.0.3 to 6.0.4

Bumps [utf-8-validate](https://github.com/websockets/utf-8-validate) from 6.0.3 to 6.0.4.
- [Release notes](https://github.com/websockets/utf-8-validate/releases)
- [Commits](websockets/utf-8-validate@v6.0.3...v6.0.4)

---
updated-dependencies:
- dependency-name: utf-8-validate
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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