stack sizes: reduce stack sizes for modules that use sensor_combined

The sensor_combined topic got reduced from ~780 bytes to 72 bytes.

src/modules/position_estimator_inav/position_estimator_inav_main.cpp

@@ -151,7 +151,7 @@ int position_estimator_inav_main(int argc, char *argv[])
 
 		thread_should_exit = false;
 		position_estimator_inav_task = px4_task_spawn_cmd("position_estimator_inav",
-					       SCHED_DEFAULT, SCHED_PRIORITY_MAX - 5, 5300,
+					       SCHED_DEFAULT, SCHED_PRIORITY_MAX - 5, 4600,
 					       position_estimator_inav_thread_main,
 					       (argv && argc > 2) ? (char *const *) &argv[2] : (char *const *) NULL);
 		return 0;