update dependencies (#568)

- chalk@4.1.2
- grunt@1.5.2
- maxmin@3.0.0
- uglify-js@3.15.4

Author: alexlamsl

package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "grunt-contrib-uglify",
   "description": "Minify JavaScript files with UglifyJS",
-  "version": "5.0.1",
+  "version": "5.2.0",
   "author": {
     "name": "Grunt Team",
     "url": "https://gruntjs.com/"
@@ -16,13 +16,13 @@
     "test": "grunt test"
   },
   "dependencies": {
-    "chalk": "^2.4.1",
-    "maxmin": "^2.1.0",
-    "uglify-js": "^3.15.2",
+    "chalk": "^4.1.2",
+    "maxmin": "^3.0.0",
+    "uglify-js": "^3.15.4",
     "uri-path": "^1.0.0"
   },
   "devDependencies": {
-    "grunt": "^1.1.0",
+    "grunt": "^1.5.2",
     "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-internal": "^7.0.0",
     "grunt-contrib-jshint": "^3.2.0",

package.json

@@ -1,5 +1,4 @@
-!function(){var list,math,square;square=function(x){return x*x},list=[1,2,3,4,5],math={
-root:Math.sqrt,square:square,cube:function(x){return x*square(x)}},
-"undefined"!=typeof elvis&&null!=elvis&&alert("I knew it!"),function(accum$){for(var i$=0,
-length$=list.length;i$<length$;++i$)accum$.push(math.cube(list[i$]));return accum$}.call(this,[])
-}.call(this);
+!function(){var square=function(x){return x*x},list=[1,2,3,4,5],math={root:Math.sqrt,square:square,
+cube:function(x){return x*square(x)}};"undefined"!=typeof elvis&&null!=elvis&&alert("I knew it!"),
+function(accum$){for(var i$=0,length$=list.length;i$<length$;++i$)accum$.push(math.cube(list[i$]));
+return accum$}.call(this,[])}.call(this);