fix(DB/Pets): Added casterGuid as a primary key to pet_aura table. (#5423)

data/sql/updates/pending_db_characters/rev_1619247484235757300.sql

@@ -0,0 +1,5 @@
+INSERT INTO `version_db_characters` (`sql_rev`) VALUES ('1619247484235757300');
+
+ALTER TABLE `pet_aura`
+DROP PRIMARY KEY,
+ADD PRIMARY KEY (`guid`, `casterGuid`, `spell`, `effectMask`);