Improve quest The Lost Tablets of Will (#4452)

data/sql/updates/pending_db_world/rev_1612528921944990905.sql

@@ -0,0 +1,5 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1612528921944990905');
+
+-- Lower respawn of Tablet of Will from 24h to 2s
+
+UPDATE `gameobject` SET `spawntimesecs`=2 WHERE `guid`=40688;