[3.12] gh-151544: Fixes CVE-2026-12003 by removing the fallback to %VPATH%/Modules/Setup.local for discovering sources in getpath.py (GH-151545) (#151567)
gh-151544: Fixes CVE-2026-12003 by removing the fallback to %VPATH%/Modules/Setup.local for discovering sources in getpath.py (GH-151545)
(cherry picked from commit 9e863fab283eddca9c2a8f9d1ee30f4dc243e314)
Co-authored-by: Steve Dower <steve.dower@python.org>