The Rent Guidelines Board increases — which passed, controversially, this June amid the most brutal rental market in years — will finally go into effect at the end of this week. Rents on one-year leases signed between October 1 and September 30, 2023, will go up by 3.25 percent, the highest increase in nearly a decade. And that’s if you’re lucky enough to live in one of the city’s million or so rent-stabilized apartments. For everyone else, well, your rent is probably going up, too. Or at least it’s never going down.