Increase app minimum supported iOS version from 9.0 to 11.0

[jmagman]

Increase minimum Flutter app target iOS version from 9.0 to 11.0 flutter.dev/go/rfc-32-bit-ios-unsupported.

This should update apps, modules, and plugin example apps.

Last done in 8->9
Template: #60035 / #62902
Auto-migration: #85173 / #85174

Note this does not track updating plugins minimum version, which will require a new Flutter version constraints as done in #89695

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.