Amazon hired banks on Tuesday for its first ever sterling bond sale, according to a memo seen by Reuters, as hyperscalers rush to raise funding across currencies to finance the AI boom.The tech ?giant is ?looking ?to sell 3-year, 6-year, 12-year and 19-year bonds, according ?to the memo from one of the banks arranging ?the sale.The transaction may come as early as Wednesday, subject to market conditions, the memo added.It ?did not specify how much ?money Amazon ?is looking to raise from ?the bonds.Hyperscalers ?like Amazon are increasingly selling ?bonds across markets outside of the U.S. this ?year, from euros…