Upgrade 50% of bots in dart-internal to macOS 15.5 #167839
Description
Type of Request
infra task
Infrastructure Environment
Devicelab
What is happening?
Prerequisites
- Update .ci.yaml in flutter/flutter to use either macOS 14 or macOS 15 #167824
- Upgrade 50% of chromium bots to macOS 15.5 #167827
- CP macOS 15 fixes for beta and stable #167837
- CP ci.yaml and configs to run on either macOS 14 or 15 for beta and stable #167838
- Ensure no open issues in Tracking issue for any infra or test failures with macOS 15 #167681
Upgrade 50% of bots per arch in luci.dart-internal.flutter to macOS 15.5.
When ready to upgrade, file an issue with a list of explicit bots listed by name to upgrade. See b/326078082 as example. Include request to ensure the Flutter Devicelab cert is installed as well after reimage in the issue.
Steps to reproduce
No response
Expected results
No response