Update dependency karma to v4.4.1

Author: renovate-bot

package-lock.json

@@ -50,7 +50,7 @@
     "husky": "1.3.1",
     "jasmine-core": "3.4.0",
     "jasmine-spec-reporter": "4.2.1",
-    "karma": "4.1.0",
+    "karma": "4.4.1",
     "karma-chrome-launcher": "2.2.0",
     "karma-coverage-istanbul-reporter": "2.0.5",
     "karma-jasmine": "2.0.1",