chore(package): update karma-mocha-reporter to version 2.2.4

Author: greenkeeper[bot]

package.json

@@ -25,7 +25,7 @@
     "karma-coveralls": "1.1.2",
     "karma-firefox-launcher": "1.0.1",
     "karma-mocha": "1.3.0",
-    "karma-mocha-reporter": "2.2.3",
+    "karma-mocha-reporter": "2.2.4",
     "mocha": "3.5.0",
     "mz": "2.6.0",
     "sinon": "3.2.1",