Update patch to Python 3.12.12 #302

Job	Run time
config	17s
build (watchOS)	8m 26s
build (tvOS)	6m 40s
build (macOS)	34s
build (iOS)	8m 3s
Briefcase testbed (iOS)	4m 46s
CPython testbed (iOS)	12s
CPython testbed (tvOS)	14s
Cross-platform env test (x86_64-iphonesimulator)	19s
Cross-platform env test (arm64-iphonesimulator)	18s
Briefcase testbed (macOS)	2m 17s
Cross-platform env test (arm64-iphoneos)	20s
	32m 26s

Provide feedback