chore(package): update karma-coverage to version 2.0.2

Closes #226

Author: greenkeeper[bot]

package.json

@@ -55,7 +55,7 @@
         "karma": "^4.2.0",
         "karma-browserstack-launcher": "~1.4.0",
         "karma-chrome-launcher": "^3.0.0",
-        "karma-coverage": "^1.1.2",
+        "karma-coverage": "^2.0.2",
         "karma-firefox-launcher": "^1.1.0",
         "karma-jasmine": "^2.0.1",
         "karma-mocha-reporter": "^2.2.5",