[3.14] gh-128307: Update what's new in 3.13 and 3.14 with create_task changes of asyncio (GH-134304) (#134319)

gh-128307: Update what's new in 3.13 and 3.14 with create_task changes of asyncio  (GH-134304)
(cherry picked from commit 28625d4f956f8d30671aba1daaac9735932983db)

Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>