fix(DB/GO): prevent herb from spawning in the ground (#6993)

data/sql/updates/pending_db_world/rev_1626468468863337100.sql

@@ -0,0 +1,4 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1626468468863337100');
+
+-- Move herb above ground
+UPDATE `gameobject` SET `position_z` = 32.195 WHERE `id` = 2046 AND `guid` = 8802;