fix(DB/Spell): Make Amplify Magic Ranks 4-7 as Positive (#4567)

data/sql/updates/pending_db_world/rev_1613268991019765900.sql

@@ -0,0 +1,10 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1613268991019765900');
+
+/* Correctly set Amplify Magic Ranks 4 thru 7 as positive buffs.
+*/
+DELETE FROM `spell_custom_attr` WHERE `spell_id` IN (43017, 33946, 27130, 10170);
+INSERT INTO `spell_custom_attr` (`spell_id`, `attributes`) VALUES 
+(43017, 100663296),
+(33946, 100663296),
+(27130, 100663296),
+(10170, 100663296);