Bump grunt-contrib-uglify from 4.0.1 to 5.2.1
Bump grunt-contrib-uglify from 4.0.1 to 5.2.1

Bumps [grunt-contrib-uglify](https://github.com/gruntjs/grunt-contrib-uglify) from 4.0.1 to 5.2.1.
- [Release notes](https://github.com/gruntjs/grunt-contrib-uglify/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-uglify/blob/main/CHANGELOG)
- [Commits](https://github.com/gruntjs/grunt-contrib-uglify/compare/v4.0.1...v5.2.1)

---
updated-dependencies:
- dependency-name: grunt-contrib-uglify
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
llaumgui/jquery-async-gravatar,llaumgui/jquery-async-gravatar