By Andrew Holleran The world’s governing swimming body has made an official decision on transgender swimmers. Lia Thomas, the transgender swimmer from Penn, sparked national debate this year with her dominance inside the pool. The former Penn men’s swimmer joined the women’s team after transitioning. Thomas won a national championship in the women’s division this year. On Sunday, FINA members voted 71.5% in favor of a new “gender inclusion policy.” The decision will restrict competition by transgender swimmers. ESPN had more on the decision: The new policy, which takes effect Monday, will requ…