Update dependency karma to v6 [SECURITY]

Author: renovate[bot]

cucumber-selenium-grid/angularjs/package.json

@@ -16,7 +16,7 @@
   "devDependencies": {
     "angular-mocks": "^1.4.3",
     "jasmine-core": "^2.2.0",
-    "karma": "^0.13.0",
+    "karma": "^6.3.16",
     "karma-chrome-launcher": "^0.2.2",
     "karma-firefox-launcher": "^0.1.7",
     "karma-jasmine": "^0.3.5",