Fixes: https://github.com/fleetdm/fleet/actions/runs/30519842615/job/90797961257. <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Chores** * Improved end-to-end test packaging reliability on macOS by adding a retry mechanism with delays and failing after repeated unsuccessful attempts. * Updated end-to-end test environment hostname setup on Ubuntu to use a transient hostname derived from the target architecture. <!-- end of auto-generated comment: release notes by coderabbit.ai -->