Fix: one piece of archfiend dialogue used "you" pronoun

I edited the rest of their dialogue to use "thou" during the changes to
bribing in 8.0, but the "You bring me no tribute?" line wasn't touched
by those changes. Edit this line to be consistent.

Author: copperwater

src/minion.c

@@ -498,7 +498,7 @@ demon_talk(struct monst *mtmp)
     else if (items_given == 0 && (cash == 0 || gm.multi < 0)) {
         /* you have no gold or can't move */
         pline("%s roars:", Amonnam(mtmp));
-        verbalize("You bring me no tribute?  Then you must die!");
+        verbalize("Thou bringest me no tribute?  Then thou shalt die!");
         mtmp->mpeaceful = 0;
         set_malign(mtmp);
         newsym(mtmp->mx, mtmp->my);