Bump uglify-js from 3.15.1 to 3.15.2 in /docker/node (from PR #1791)
Bump uglify-js from 3.15.1 to 3.15.2 in /docker/node (from PR #1791)

Bumps [uglify-js](https://github.com/mishoo/UglifyJS) from 3.15.1 to 3.15.2.
- [Release notes](https://github.com/mishoo/UglifyJS/releases)
- [Commits](https://github.com/mishoo/UglifyJS/compare/v3.15.1...v3.15.2)

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