bpo-44732: Rename types.Union to types.UnionType (GH-27342)


Co-authored-by: Ɓukasz Langa <lukasz@langa.pl>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
(cherry picked from commit 2b8ad9e6c5f0a66e9ca2d15f85336d8a3eefefb0)

Co-authored-by: Hasan <hasan.aleeyev@gmail.com>
7 files changed