PHILADELPHIA — Trustees of Pennsylvania’s largest state-funded pension fund, PSERS, voted unanimously to “take all necessary action” to dump up to $300 million it has invested in Russia and Belarus to protest Russia’s invasion, from bases in both countries, of neighboring Ukraine. The move — involving about 0.4% of the total assets of the Public School Employees’ Retirement System — is in response to what board chairman Christopher Santa Maria called “the terrible military campaign being inflicted on [Ukraine] by Russia and Belarus.” “This is barbaric,” said state Rep. Frank Ryan, R.-Lebanon, …