Update dependency karma to v3.1.4

Author: renovate-bot

package-lock.json

@@ -77,7 +77,7 @@
     "coveralls": "3.0.2",
     "jasmine-core": "3.3.0",
     "jasmine-spec-reporter": "4.2.1",
-    "karma": "3.1.3",
+    "karma": "3.1.4",
     "karma-chrome-launcher": "2.2.0",
     "karma-cli": "1.0.1",
     "karma-coverage-istanbul-reporter": "2.0.4",