3.13.7 update #276

Job	Run time
config	11s
build (iOS)	5m 43s
build (tvOS)	5m 17s
build (macOS)	30s
build (visionOS)	4m 7s
build (watchOS)	6m 32s
Cross-platform env test (x86_64-iphonesimulator)	22s
Briefcase testbed (macOS)	1m 35s
Cross-platform env test (arm64-iphoneos)	19s
Cross-platform env test (arm64-iphonesimulator)	19s
CPython testbed (tvOS)	1m 59s
CPython testbed (iOS)	2m 47s
CPython testbed (visionOS)	2m 29s
Briefcase testbed (iOS)	3m 40s
	35m 50s

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