[Infra] Update core workflows to use macOS 15 for Xcode 16 #1364

Job	Run time
catalyst	5m 14s
pod-lib-lint (ios, macos-14, Xcode_15.2)	9m 39s
spm-package-resolved	1m 13s
pod-lib-lint (ios, macos-15, Xcode_16.1)	3m 49s
pod-lib-lint (tvos, macos-14, Xcode_15.2)	5m 14s
pod-lib-lint (tvos, macos-15, Xcode_16.1)	2m 36s
pod-lib-lint (macos, macos-14, Xcode_15.2)	3m 20s
pod-lib-lint (macos, macos-15, Xcode_16.1)	2m 6s
pod-lib-lint (watchos, macos-14, Xcode_15.2)	2m 5s
pod-lib-lint (watchos, macos-15, Xcode_16.1)	1m 8s
spm (macos-13, Xcode_15.2, iOS)	6m 19s
spm (macos-14, Xcode_15.4, iOS)	7m 41s
spm (macos-15, Xcode_16.1, iOS)	3m 1s
spm (macos-15, Xcode_16.1, tvOS)	1m 48s
spm (macos-15, Xcode_16.1, macOS)	1m 57s
spm (macos-15, Xcode_16.1, watchOS)	1m 58s
spm (macos-15, Xcode_16.1, catalyst)	1m 45s
spm (macos-15, Xcode_16.1, visionOS)	1m 54s
core-internal-cron-only	0s
	1h 2m 47s

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