Pin Xcode 16 #7518

Job	Run time
Multi-language repository (ubuntu-latest, stable-v2.21.4)	4m 21s
Multi-language repository (macos-latest, stable-v2.21.4)	8m 28s
Multi-language repository (macos-latest, stable-v2.17.6)	9m 23s
Multi-language repository (macos-latest, stable-v2.18.4)	7m 22s
Multi-language repository (ubuntu-latest, stable-v2.19.4)	5m 13s
Multi-language repository (macos-latest, stable-v2.19.4)	7m 21s
Multi-language repository (macos-latest, linked)	10m 28s
Multi-language repository (ubuntu-latest, default)	5m 28s
Multi-language repository (ubuntu-latest, stable-v2.18.4)	4m 23s
Multi-language repository (macos-latest, default)	9m 52s
Multi-language repository (ubuntu-latest, linked)	4m 47s
Multi-language repository (macos-latest, nightly-latest)	14m 15s
Multi-language repository (ubuntu-latest, stable-v2.17.6)	4m 43s
Multi-language repository (macos-latest, stable-v2.20.7)	8m 56s
Multi-language repository (ubuntu-latest, stable-v2.20.7)	4m 49s
Multi-language repository (ubuntu-latest, nightly-latest)	4m 15s
	1h 54m 4s

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