This upgrades a number of devDependencies. Some of these include changes to how the tasks are configured. Uglify: There are deprecated options from 2.x to 4.x, see: https://github.com/gruntjs/grunt-contrib-uglify#options Autoprefixer: Browserslist now warns when passing in the browser list, so that is put into package.json As with most changes to uglify, this changes every minified JS file. Fixes #48203. Built from https://develop.svn.wordpress.org/trunk@46408 git-svn-id: http://core.svn.wordpress.org/trunk@46206 1a063a9b-81f0-0310-95a4-ce76da25c4cd
