refactor: point proxy to new heroku app (#242)

Author: Jaryt

src/components/menus/definitions/OrbDefinitionsMenu.tsx

@@ -54,7 +54,7 @@ export const loadOrb = (orb: string, value?: OrbImport) => {
   const endpoint =
     process.env.NODE_ENV === 'development'
       ? 'http://localhost:3030'
-      : 'https://temp-orb-manifest-endpoint.herokuapp.com';
+      : 'https://orb-indexer-proxy.herokuapp.com';
 
   return fetch(`${endpoint}/orbs?orb=${orb}`).then(
     (resp) =>