RSDK-6194 rename arm64 release artifacts

[abe-winter]

What changed

• revert naming style of the aarch64 release artifact to the old style

Why

• the name of this output changed between 0.1.2 and 0.1.3
• viam-cpp-sdk consumes static rust-utils from github releases here in CMake
• this causes some c++ modules to fail on arm (example CI failure here)

Other approaches

• if the new format is the superior format we can edit the URL in the cpp sdk instead

[benjirewis]

Oops, no aarch64-unknown-linux-gnu is not a purposefully different format; I wasn't aware that I had even changed the naming. Thanks for catching this!