By Dan Weil The global talent shortage could more than double to 85 million people by 2030 from 40 million in 2020, Bank of America estimates. The Great Resignation has made big news, with 4.4 million workers in the U.S. quitting their jobs in April. “The global working-age population has peaked at 66% and is declining, per the World Bank,” Bank of America strategists wrote in a commentary. That stems from “an aging population with reduced fertility and participation rates, compounded by a geographically concentrated workforce facing several structural skills gaps,” they said. Europe alone wil…