GitLab

* Unified arm/x86 windows installer

This adjusts the installer payloads to be architecture aware so we can cary
both amd64 and arm64 binaries in the installer, and install only the applicable
architecture at install time.

* Include arm64 in official windows build

* Harden schedule test for slow windows timers

This test seems to be a bit flaky on windows, so give it more time to converge