Added uname -m values for Apple Silicon and RISC-V (64-bit).
Added uname -m values for Apple Silicon and RISC-V (64-bit).

This commit adds the uname -m values for Apple Silicon and 64-bit RISC-V
architecture.

Signed-off-by: Jacob Howard <f862f167b85d41b225785c70d70808bc7337c1fe@havoc.io>

havoc-io/mutagen,havoc-io/mutagen