fix(DB/creature): Son of Arugal movement (#6184)

Son of Arugal (id: 18424) was standing still. He should either wander
around aimlessly or have a set path; I chose the former

- Closes #6084

data/sql/updates/pending_db_world/rev_1622617341739892363.sql

@@ -0,0 +1,3 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1622617341739892363');
+
+UPDATE `creature` SET `wander_distance` = 10, `MovementType` = 1 WHERE `guid` = 18424 AND `id` = 2529;