microRTPS: client: reserve the minimum required stack to the send/receive tasks

msg/templates/uorb_microcdr/microRTPS_client.cpp.em

@@ -170,7 +170,7 @@ static int launch_send_thread(pthread_t &sender_thread)
 {
     pthread_attr_t sender_thread_attr;
     pthread_attr_init(&sender_thread_attr);
-    pthread_attr_setstacksize(&sender_thread_attr, PX4_STACK_ADJUSTED(4096));
+    pthread_attr_setstacksize(&sender_thread_attr, PX4_STACK_ADJUSTED(2250));
     struct sched_param param;
     (void)pthread_attr_getschedparam(&sender_thread_attr, &param);
     param.sched_priority = SCHED_PRIORITY_DEFAULT;

src/modules/micrortps_bridge/micrortps_client/microRTPS_client_main.cpp

@@ -214,7 +214,7 @@ int micrortps_client_main(int argc, char *argv[])
 		_rtps_task = px4_task_spawn_cmd("rtps",
 						SCHED_DEFAULT,
 						SCHED_PRIORITY_DEFAULT,
-						4096,
+						2650,
 						(px4_main_t) micrortps_start,
 						(char *const *)argv);