chore(deps-dev): bump rollup-plugin-uglify from 6.0.2 to 6.0.4

Bumps [rollup-plugin-uglify](https://github.com/TrySound/rollup-plugin-uglify) from 6.0.2 to 6.0.4.
- [Release notes](https://github.com/TrySound/rollup-plugin-uglify/releases)
- [Commits](TrySound/rollup-plugin-uglify@v6.0.2...v6.0.4)

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