set min iOS version to iOS 12

[billypchan]

Goals ⚽

When archiving with Carthage (macOS 11, Xcode 13.0 beta 5), error is produced for:
error: 'NWConnection' is only available in iOS 12.0 or newer
I would like fix the error simple fulfil this by drop iOS 12- support which we already done in all frameworks.

Implementation Details 🚧

Change min iOS version from 9 to 12

[typfel]

Why do we need enforce the iOS 12 as the deployment target for third party frameworks? Shouldn't it be fine for frameworks to support earlier iOS versions and we then only need to enforce the deployment target at the top level in Wire-iOS app?

[billypchan]

@typfel I update the comment. This issue occurs when archiving with Xcode 13 with xcodebuild.

[typfel]

@typfel I update the comment. This issue occurs when archiving with Xcode 13 with xcodebuild.

OK so this is a workaround for what appears to be some misconfiguration/bug in Starscream and not something we need to do for all third party frameworks.