chore(package): update karma-mocha to version 2.0.0

package.json

@@ -94,7 +94,7 @@
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^3.1.0",
     "karma-firefox-launcher": "^1.0.0",
-    "karma-mocha": "^1.1.1",
+    "karma-mocha": "^2.0.0",
     "karma-mocha-reporter": "^2.0.4",
     "karma-webpack": "^4.0.2",
     "karma-xml2js-preprocessor": "^0.0.3",