chore(package): update karma to version 1.4.1

https://greenkeeper.io/

package.json

@@ -224,7 +224,7 @@
     "file-loader": "0.9.0",
     "glob": "7.1.1",
     "json-loader": "0.5.4",
-    "karma": "1.4.0",
+    "karma": "1.4.1",
     "karma-chai": "0.1.0",
     "karma-coverage": "1.1.1",
     "karma-coveralls": "1.1.2",