ci: Update to Xcode 15.2 #574

Job	Run time
linux	2m 21s
linux	2m 11s
windows	4m 20s
windows	4m 20s
spm-test	6m 15s
spm-test	6m 15s
test (platform=iOS\ Simulator,name=iPhone\ 15\ Pro\ Max, test)	13m 1s
test (platform=iOS\ Simulator,name=iPhone\ 15\ Pro\ Max, test)	13m 1s
test (platform\=tvOS\ Simulator,name\=Apple\ TV, test)	6m 17s
test (platform\=tvOS\ Simulator,name\=Apple\ TV, test)	6m 17s
test (platform=watchOS\ Simulator,name=Apple\ Watch\ Series\ 9\ \(41mm\), build)	1m 10s
test (platform=watchOS\ Simulator,name=Apple\ Watch\ Series\ 9\ \(41mm\), build)	1m 10s
test (platform=visionOS\ Simulator,name=Apple\ Vision\ Pro, test)	7m 5s
test (platform=visionOS\ Simulator,name=Apple\ Vision\ Pro, test)	7m 5s
test (platform=macOS, test)	7m 20s
test (platform=macOS, test)	7m 20s
cocoapods	0s
cocoapods	11m 31s
docs	0s
docs	24s
xcode-test-5_5	0s
xcode-test-5_5	1m 9s
	1h 48m 32s

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