fix(client-analytics): add missing updatedAt attribute

Author: kombucha

packages/client-analytics/src/types/GetABTestResponse.ts

@@ -25,6 +25,11 @@ export type GetABTestResponse = {
    * The ab test created date, if any.
    */
   createdAt: string;
+  
+  /**
+   * The ab test updated date.
+   */
+  updatedAt: string;
 
   /**
    * The ab test unique identifier.