chore: raise minimum supported platform, Swift, and Xcode versions #1119

Job	Run time
Build Amplify Swift for visionOS / Build Amplify-Build \| visionOS	17m 15s
Build Amplify Swift for watchOS / Build Amplify-Build \| watchOS	46m 7s
Build Amplify Swift for iOS / Build Amplify-Build \| iOS	17m 13s
Build Amplify Swift for tvOS / Build Amplify-Build \| tvOS	12m 15s
Build Amplify Swift for macOS / Build Amplify-Build \| macOS	11m 28s
Confirm Passing Build Steps	4s
	1h 44m 22s

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