Add arm64 so we can start doing builds for it.
Add arm64 so we can start doing builds for it.

wheelcomplex/crochet-freebsd,dankm/crochet-freebsd,wheelcomplex/crochet-freebsd,freebsd/crochet,HardenedBSD/crochet,brd/crochet,HardenedBSD/crochet,teverett/crochet-freebsd,freebsd/crochet,brd/crochet,brd/crochet,teverett/crochet-freebsd,wheelcomplex/crochet-freebsd,dankm/crochet-freebsd