By Kanishka Singh WASHINGTON (Reuters) -University of Pennsylvania President Liz Magill, who came under fire for her stance on antisemitism on campus, has resigned, the Ivy League school said on Saturday. Magill was one of three top university presidents who were criticized after they testified at a congressional hearing on Tuesday about a rise in antisemitism on college campuses following the outbreak of the Israel-Hamas war in October. She has agreed to stay on until an interim president is appointed, Scott Bok, chair of the Philadelphia-based university’s board of trustees, said on Saturday…