[NRRPLT-0000][HOTFIX] Downgrade karma to version 4.4.1 to restore unit...

[NRRPLT-0000][HOTFIX] Downgrade karma to version 4.4.1 to restore unit testing. Version 5.1.0 breaks grunt-tasks

package.json

@@ -90,7 +90,7 @@
     "ink-docstrap": "1.3.0",
     "jsdoc": "3.5.5",
     "jsdoc-sphinx": "0.0.6",
-    "karma": "5.1.0",
+    "karma": "4.4.1",
     "karma-browserify": "7.0.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-coverage": "^1.1.2",