[CI] Stop Xcode 14, start Xcode 15.3 #3919

Job	Run time
pod-lib-lint (FirebaseAuthInterop.podspec, ios, macos-14)	1m 2s
pod-lib-lint (FirebaseAuthInterop.podspec, ios, macos-13)	1m 59s
pod-lib-lint (FirebaseAuthInterop.podspec, tvos, macos-14)	57s
pod-lib-lint (FirebaseAuthInterop.podspec, tvos, macos-13)	2m 26s
pod-lib-lint (FirebaseAuthInterop.podspec, macos --skip-tests, macos-14)	1m 27s
pod-lib-lint (FirebaseAuthInterop.podspec, macos --skip-tests, macos-13)	2m 43s
pod-lib-lint (FirebaseAuthInterop.podspec, watchos, macos-14)	56s
pod-lib-lint (FirebaseAuthInterop.podspec, watchos, macos-13)	1m 49s
pod-lib-lint (FirebaseAuth.podspec, ios, macos-14)	1m 46s
pod-lib-lint (FirebaseAuth.podspec, ios, macos-13)	13m 53s
pod-lib-lint (FirebaseAuth.podspec, tvos, macos-14)	1m 57s
pod-lib-lint (FirebaseAuth.podspec, tvos, macos-13)	4m 54s
pod-lib-lint (FirebaseAuth.podspec, macos --skip-tests, macos-14)	2m 4s
pod-lib-lint (FirebaseAuth.podspec, macos --skip-tests, macos-13)	3m 43s
pod-lib-lint (FirebaseAuth.podspec, watchos, macos-14)	2m 2s
pod-lib-lint (FirebaseAuth.podspec, watchos, macos-13)	3m 38s
catalyst	2m 9s
integration-tests	13m 46s
quickstart	2m 55s
spm (iOS, macos-13)	2m 29s
spm (iOS, macos-14)	1m 28s
spm (tvOS, macos-13)	3m 38s
spm (tvOS, macos-14)	1m 36s
spm (macOS, macos-13)	2m 58s
spm (macOS, macos-14)	1m 51s
spm (catalyst, macos-13)	2m 44s
spm (catalyst, macos-14)	1m 38s
spm (watchOS, macos-13)	2m 44s
spm (watchOS, macos-14)	1m 26s
spm (macos-14, visionOS, Xcode_15.3, spm)	2m 18s
auth-cron-only	0s
	1h 30m 56s

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