Xcode_16 will soon require macos-15 in GHA #2620

Job	Run time
catalyst	6m 57s
spm-package-resolved	49s
quickstart	18m 37s
pod-lib-lint (ios, macos-14)	14m 22s
quickstart-ftl-cron-only	0s
pod-lib-lint (tvos, macos-14)	7m 1s
pod-lib-lint (macos --skip-tests, macos-14)	5m 1s
pod-lib-lint (watchos, macos-14)	6m 28s
spm (macos-13, Xcode_15.2, iOS)	1m 51s
spm (macos-14, Xcode_15.4, iOS)	2m 8s
spm (macos-15, Xcode_16, iOS)	1m 13s
spm (macos-15, Xcode_16, tvOS)	1m 13s
spm (macos-15, Xcode_16, macOS)	1m 15s
spm (macos-15, Xcode_16, watchOS)	2m 23s
spm (macos-15, Xcode_16, catalyst)	1m 16s
spm (macos-15, Xcode_16, visionOS)	1m 17s
installations-cron-only	0s
	1h 11m 51s

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