Fix local config test

Author: jmgasper

config/default.js

@@ -2,7 +2,7 @@ require("dotenv").config();
 
 module.exports = {
   MFE_CONFIG: {
-    '@topcoder/micro-frontends-challenges-app': 'http://localhost:8009/challenges-app/topcoder-micro-frontends-challenges-app.js',
+    '@topcoder/micro-frontends-challenges-app': 'https://platform.topcoder-dev.com/challenges-app/topcoder-micro-frontends-challenges-app.js',
     '@topcoder/micro-frontends-gigs-app': 'https://platform.topcoder-dev.com/gigs-app/topcoder-micro-frontends-gigs-app.js',
   }
 };