Update dependencies

Author: Matt Surabian

package-lock.json

@@ -39,7 +39,7 @@
     "hard-source-webpack-plugin": "^0.12.0",
     "howler": "^2.1.3",
     "json-loader": "^0.5.4",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.20",
     "node-object-hash": "^1.4.2",
     "pixi.js": "^4.8.9",
     "script-loader": "^0.7.2",