build: generate project using karma-coverage-istanbul-reporter using 3.0.2

Author: alan-agius4

packages/schematics/angular/workspace/files/package.json.template

@@ -34,7 +34,7 @@
     "jasmine-spec-reporter": "~5.0.0",
     "karma": "~5.0.0",
     "karma-chrome-launcher": "~3.1.0",
-    "karma-coverage-istanbul-reporter": "~2.1.0",
+    "karma-coverage-istanbul-reporter": "~3.0.2",
     "karma-jasmine": "~3.1.1",
     "karma-jasmine-html-reporter": "^1.4.2",
     "protractor": "~5.4.3",<% } %>