INDIANAPOLIS — A federal appeals court is letting Indiana University keep its COVID-19 vaccination requirement for students in place, dealing another legal blow to a lawsuit challenging it. The Chicago-based 7th Circuit Court of Appeals issued a ruling Tuesday that declared the lawsuit moot since seven of the eight students who sued the university had been granted religious exemptions and the other has withdrawn as a student.Indiana University announced last May that the COVID-19 vaccination mandate for its some 115,000 …