Update patch to 3.13.8. (#323) #190

Job	Run time
Build vars	4s
CI / config	10s
CI / build (iOS)	7m 18s
CI / build (watchOS)	6m 49s
CI / build (tvOS)	5m 50s
CI / build (macOS)	30s
CI / build (visionOS)	5m 40s
CI / Briefcase testbed (macOS)	1m 51s
CI / Cross-platform env test (x86_64-iphonesimulator)	18s
CI / Cross-platform env test (arm64-iphonesimulator)	21s
CI / Cross-platform env test (arm64-iphoneos)	18s
CI / Briefcase testbed (iOS)	3m 33s
CI / CPython testbed (tvOS)	1m 49s
CI / CPython testbed (iOS)	4m 42s
CI / CPython testbed (visionOS)	4m 8s
Make Release	1s
	43m 22s

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