fix(package): update ansi-colors to version 3.2.4

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
     "url": "git://github.com/mjeanroy/gulp-header-comment.git"
   },
   "dependencies": {
-    "ansi-colors": "3.2.3",
+    "ansi-colors": "3.2.4",
     "commenting": "1.0.5",
     "fancy-log": "1.3.3",
     "lodash": "4.17.11",