Fix(DB/Trainer): Correct Polearm MinLvl Req (#4566)

data/sql/updates/pending_db_world/rev_1613263139054916400.sql

@@ -0,0 +1,5 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1613263139054916400');
+
+DELETE FROM `npc_trainer` WHERE (`ID` = 11867) AND (`SpellID` IN (200));
+INSERT INTO `npc_trainer` (`ID`, `SpellID`, `MoneyCost`, `ReqSkillLine`, `ReqSkillRank`, `ReqLevel`) VALUES
+(11867, 200, 10000, 0, 0, 20);