Update (c) information post acquisition

(cherry picked from commit 308f37e)

Author: michaelklishin

projects/client/RabbitMQ.Client/src/client/api/IQueueingBasicConsumer.cs

@@ -35,7 +35,7 @@
 //  The Original Code is RabbitMQ.
 //
 //  The Initial Developer of the Original Code is Pivotal Software, Inc.
-//  Copyright (c) 2007-2016 Pivotal Software, Inc.  All rights reserved.
+//  Copyright (c) 2007-2020 VMware, Inc.  All rights reserved.
 //---------------------------------------------------------------------------
 
 using System;