github: update to Xcode 16 #2529

Job	Run time
Setup configuration	1s
Build Sysroot (arm64, ios)	18m 25s
Build Sysroot (arm64, ios_simulator)	18m 48s
Build Sysroot (arm64, ios-tci)	2s
Build Sysroot (arm64, ios_simulator-tci)	18m 47s
Build Sysroot (arm64, macos)	18m 48s
Build Sysroot (arm64, visionos)	1s
Build Sysroot (arm64, visionos_simulator)	1s
Build Sysroot (arm64, visionos-tci)	1s
Build Sysroot (arm64, visionos_simulator-tci)	1s
Build Sysroot (x86_64, macos)	1s
Build Sysroot (x86_64, ios_simulator)	1s
Build UTM	0s
Build Sysroot (Universal Mac)	0s
Package (iOS)	0s
Submit (iOS)	0s
Build UTM (Universal Mac)	0s
Dispatch (iOS)	0s
Submit (macOS)	0s
Package (macOS)	0s
	1h 14m 57s

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