[expo-docs] Update minimum iOS and Android version
[expo-docs] Update minimum iOS and Android version

The required iOS version and Android version have been changed since SDK v31

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Closes expo/expo-docs#423

exponentjs/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponentjs/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent