Upgrade karma-qunit

Author: jgonggrijp

package-lock.json

@@ -59,7 +59,7 @@
     "gzip-size-cli": "^1.0.0",
     "husky": "^4.2.3",
     "karma": "^4.4.1",
-    "karma-qunit": "~2.0.1",
+    "karma-qunit": "^4.1.2",
     "karma-sauce-launcher": "^4.3.6",
     "nyc": "^2.1.3",
     "pretty-bytes-cli": "^1.0.0",