fix(package): update chalk to version 4.0.0

Closes #133

Author: greenkeeper[bot]

package.json

@@ -39,7 +39,7 @@
     }
   },
   "dependencies": {
-    "chalk": "^2.4.2",
+    "chalk": "^4.0.0",
     "fancy-log": "^1.3.3",
     "lodash": "^4.17.15",
     "minimatch": "^3.0.4",