fix(aws-amplify-react): Fix import statement (#1695)

Related to #1482 and #1484

Author: Gautier

packages/aws-amplify-react/src/Auth/Authenticator.jsx

@@ -12,7 +12,7 @@
  */
 
 import React, { Component } from 'react';
-import { Amplify, I18n, ConsoleLogger as Logger, Hub } from '@aws-amplify/core';
+import Amplify, { I18n, ConsoleLogger as Logger, Hub } from '@aws-amplify/core';
 import Auth from '@aws-amplify/auth';
 import Greetings from './Greetings';
 import SignIn from './SignIn';