Use 60 consumers instead of 100 in test

Because of default max number of sessions in a connection (64).

Author: acogoluegnes

src/test/java/com/rabbitmq/client/amqp/impl/TopologyRecoveryTest.java

@@ -477,7 +477,7 @@ void recoverConsumers(boolean isolateResources) {
       connection.management().exchange(e).type(FANOUT).declare();
       connection.management().queue(q).declare();
       connection.management().binding().sourceExchange(e).destinationQueue(q).bind();
-      int consumerCount = 100;
+      int consumerCount = 60;
       TestUtils.Sync consumeSync = TestUtils.sync(consumerCount);
       Consumer.MessageHandler handler =
           (ctx, m) -> {