[3.10] bpo-45447: Add entry to What's new 3.9 (GH-31305)#31309

miss-islington merged 1 commit intopython:3.10python/cpython:3.10from

miss-islington:backport-cef91ca-3.10miss-islington/cpython:backport-cef91ca-3.10Copy head branch name to clipboard