chore(package): update husky to version 4.2.4

Closes #54

Author: greenkeeper[bot]

package.json

@@ -58,7 +58,7 @@
     "grunt-contrib-uglify": "^4.0.0",
     "grunt-contrib-watch": "^1.0.0",
     "grunt-mocha": "^1.2.0",
-    "husky": "^1.0.0-rc.13",
+    "husky": "^4.2.4",
     "load-grunt-tasks": "^3.5.2",
     "mocha": "^5.2.0",
     "poll-forever": "^1.0.0",