chore(deps): update dependency karma to v6.3.16 [security] (#928)

Author: renovate-bot

package.json

@@ -56,7 +56,7 @@
     "colors": "1.4.0",
     "gts": "3.1.0",
     "istanbul-instrumenter-loader": "3.0.1",
-    "karma": "6.3.14",
+    "karma": "6.3.16",
     "karma-chrome-launcher": "3.1.0",
     "karma-coverage-istanbul-reporter": "3.0.3",
     "karma-mocha": "2.0.1",