Prerequisites

• Run all flutter/flutter macOS tests using Xcode 16 and iOS 18 simulator #148899
• Upgrade remaining devicelab bots in each pool to macOS 14.5  #148888 (assuming Xcode 16 requires macOS 14.5)
  • If Xcode 16 requires a higher macOS version, bots will need to be upgraded to new required version before doing
• Upgrade remaining chromium bots in each pool to macOS 14.5 #148892 (assuming Xcode 16 requires macOS 14.5)
  • If Xcode 16 requires a higher macOS version, bots will need to be upgraded to new required version before doing
• Ensure no open issues in ☂️ Tracking issue for any infra or test failures with Xcode 16 and iOS 18 Simulators #148898 under flutter/flutter

https://github.com/flutter/flutter/blob/master/.ci.yaml

$flutter/osx_sdk : >-
        {
-          "sdk_version": "15a240d"
+          "sdk_version": "[insert new CIPD case-sensitive Xcode build version]"
        }
        
- os: Mac-13|Mac-14
+ os: Mac-14

- ["device_os=iOS-17","os=Mac-13|Mac-14", "cpu=x86"]
+ ["device_os=iOS-17","os=Mac-14", "cpu=x86"]