Set RPC timeout to 10 seconds in tests

(cherry picked from commit 8373008)

Author: acogoluegnes

src/test/java/com/rabbitmq/client/test/TestUtils.java

@@ -62,6 +62,7 @@ public class TestUtils {
 
   public static ConnectionFactory connectionFactory() {
     ConnectionFactory connectionFactory = new ConnectionFactory();
+    connectionFactory.setChannelRpcTimeout((int) Duration.ofSeconds(10).toMillis());
     setIoLayer(connectionFactory);
     return connectionFactory;
   }