Bump uglify-js from 3.13.6 to 3.17.4

Bumps [uglify-js](https://github.com/mishoo/UglifyJS) from 3.13.6 to 3.17.4.
- [Release notes](https://github.com/mishoo/UglifyJS/releases)
- [Commits](mishoo/UglifyJS@v3.13.6...v3.17.4)

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

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Author: dependabot[bot]