(Bloomberg) -- Amazon.com Inc.’s cloud-computing unit announced updated versions of its in-house computer chips while also forging closer ties with Nvidia Corp. — dual efforts designed to ensure it can get enough supplies of crucial data-center processors. Most Read from BloombergCharlie Munger, Who Helped Buffett Build Berkshire, Dies at 99Musk’s Cybertruck Is Already a Production Nightmare for TeslaHamas Releases 12 Hostages Despite Claims of Truce ViolationsBill Ackman Bets Fed Will Cut Inter