Bump uglify-js from 2.4.24 to 3.7.7 in /etc/webapp/js/components/async
Bump uglify-js from 2.4.24 to 3.7.7 in /etc/webapp/js/components/async

Bumps [uglify-js](https://github.com/mishoo/UglifyJS2) from 2.4.24 to 3.7.7.
- [Release notes](https://github.com/mishoo/UglifyJS2/releases)
- [Commits](https://github.com/mishoo/UglifyJS2/compare/v2.4.24...v3.7.7)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
rwth-acis/mobsos-survey,rwth-acis/mobsos-survey,rwth-acis/mobsos-survey,rwth-acis/mobsos-survey