Bump patch to Python 3.13.11 #291

Job	Run time
config	33s
build (tvOS)	7m 8s
build (iOS)	7m 12s
build (visionOS)	3m 35s
build (macOS)	37s
build (watchOS)	8m 28s
Cross-platform env test (x86_64-iphonesimulator)	16s
Briefcase testbed (macOS)	1m 37s
Cross-platform env test (arm64-iphoneos)	28s
CPython testbed (tvOS)	3m 42s
CPython testbed (iOS)	6m 54s
CPython testbed (visionOS)	2m 23s
Cross-platform env test (arm64-iphonesimulator)	23s
Briefcase testbed (iOS)	7m 22s
	50m 38s

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