[3.14] gh-133403: Type Tools/build/update_file.py and check it with mypy (GH-133404)#133603

sobolevn merged 2 commits into

python:3.14python/cpython:3.14from

miss-islington:backport-50b52cb-3.14miss-islington/cpython:backport-50b52cb-3.14Copy head branch name to clipboard