Move Testing from Arm64 Drone to Github Actions

[dereknola]

Is your feature request related to a problem? Please describe.
Drone is slower, and less repeatable than GHA (restart whole pipeline vs 1 failed test). Previously, we have had to maintain testing on Drone because we did not have an alternative for the arm64 builds. As of Jan 2025, arm64 GHA are generally available at the free tier.

Describe the solution you'd like
Move all PR testing done on Drone arm64 pipeline into GHA. Leave it for publish/tags.

Describe alternatives you've considered

Additional context