[3.11] Add Pynche's move to the What's new in 3.11 (GH-97974)

* Add Pynche's move to the What's new in 3.11

* Update Doc/whatsnew/3.11.rst

Co-authored-by: Ezio Melotti <ezio.melotti@gmail.com>

Co-authored-by: Ezio Melotti <ezio.melotti@gmail.com>.
(cherry picked from commit effc25f)

Co-authored-by: Barry Warsaw <barry@python.org>

Author: warsaw