fix: add missing await key, #51

lib/Innertube.js

@@ -629,7 +629,7 @@ class Innertube {
    * @returns {Promise.<{ items: [{ date: string; videos: [] }] }>}
    */
   async getSubscriptionsFeed() {
-    const response = this.actions.browse('FEsubscriptions');
+    const response = await this.actions.browse('FEsubscriptions');
     
     const subsfeed = new Parser(this, response, {
       client: 'YOUTUBE',