Cardinal makes final appeal to overturn sex offense convictions.

FILE PHOTO: Cardinal George Pell attends news conference at the Vatican, June 29, 2017. (Image: REUTERS/Remo Casilli/File Photo)

Lawyers for former Vatican treasurer Cardinal George Pell on Tuesday filed an appeal to Australia’s High Court in a final bid to overturn his conviction for sexually abusing two 13-year-old choir boys, the High Court said.

Pell is seeking leave…