Update dependency karma-coverage-istanbul-reporter to v2.1.0

Author: renovate-bot

package.json

@@ -37,7 +37,7 @@
         "jasmine-spec-reporter": "4.2.1",
         "karma": "1.7.1",
         "karma-chrome-launcher": "2.2.0",
-        "karma-coverage-istanbul-reporter": "2.0.6",
+        "karma-coverage-istanbul-reporter": "2.1.0",
         "karma-jasmine": "1.1.2",
         "karma-jasmine-html-reporter": "0.2.2",
         "protractor": "5.3.2",