Verizon is tossing a nice upgrade to subscribers of its lower-cost 5G Start unlimited plan: beginning June 16th, the plan will include 5GB of premium mobile hotspot data at no extra cost. Right now, the plan doesn’t offer hotspot data at all, and it’s the only Verizon unlimited plan to not have it. Verizon spokesperson Ashley Colette tells The Verge it will be added automatically, meaning 5G Start subscribers shouldn’t have to make…