[3.10] gh-119342: Fix a potential denial of service in plistlib (GH-119343)#142151

serhiy-storchaka wants to merge 1 commit intopython:3.10python/cpython:3.10from

serhiy-storchaka:backport-694922c-3.10serhiy-storchaka/cpython:backport-694922c-3.10Copy head branch name to clipboard