Fix (DB\Creature) Adjust Shadowforge Surveyor z-position (#9973)

* Z-Axis Adjustment

Reopening of PR by @Azcobu that was closed thru misunderstanding
https://github.com/azerothcore/azerothcore-wotlk/pull/9559/files

* Update rev_1638885155008688879.sql

data/sql/updates/pending_db_world/rev_1638885155008688879.sql

@@ -0,0 +1,4 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1638885155008688879');
+
+-- Moves Shadowforge Surveyor up slightly so it's not stuck in object'
+UPDATE `creature` SET `position_z` = 262 WHERE `id` = 4844 AND `guid` = 7714;