Update tool minimum required version to Xcode 13 #91634
Description
Update minimum Xcode version enforced in the tool to 13.0. This is required before the engine builders can be updated to support iOS 15 due to bitcode App Store submission issues. #85555
Blocked by:
- Devicelab migration Upgrade flutter/flutter cipd package to Xcode 13 #91633
- Cirrus macOS VM image adoption Add Xcode 13 to available macOS VM images cirruslabs/macos-image-templates#39
- Plugins repo adoption [ci] Update macOS Cirrus image to Xcode 13 plugins#4429
Previous bump at #76900
Xcode 13 is the minimum recommended version as of #90906.