Sector giants BHP Group BHP.AX, Rio Tinto RIO.AX and Fortescue Metals Group FMG.AX soared between 1.9% and 2.6%. April 12 (Reuters) - Australian shares edged up on Wednesday, aided by miners and technology stocks, ahead of a key U.S. inflation data as traders gauge the Federal Reserve's monetary policy tightening path. Market participants globally are now focused on the release of U.S. consumer price index (CPI) later in the day, expecting to see a continued cooldown in inflation, with hopes that the Fed would ease up on its policy tightening.