fix(microservices): include discarded rmq client options

all other properties, beside 'connectionOptions', from the socketOptions object ( of type AmqpConnectionManagerSocketOptions )
were being discarded on the creation of the AmqpConnectionManager client
https://github.com/nestjs/nest/blob/master/packages/microservices/external/rmq-url.interface.ts#L47
https://github.com/jwalton/node-amqp-connection-manager/blob/v4.1.14/src/AmqpConnectionManager.ts#L46

nestjs#5788 (comment)

packages/microservices/client/client-rmq.ts

@@ -135,9 +135,7 @@ export class ClientRMQ extends ClientProxy {
 
   public createClient(): AmqpConnectionManager {
     const socketOptions = this.getOptionsProp(this.options, 'socketOptions');
-    return rmqPackage.connect(this.urls, {
-      connectionOptions: socketOptions?.connectionOptions,
-    });
+    return rmqPackage.connect(this.urls, socketOptions);
   }
 
   public mergeDisconnectEvent<T = any>(