Replace `ipxe-update.sh` with `scripts/build-ipxe.sh`.
* correctly builds for arm64
* supports additional configuration from environment variables
* intended for use on an installed system
Signed-off-by: Jonathon Anderson <janderson@ciq.com>
go-licenses v1.0.0 doesn't support Unlicense, which is used by one of
our indirect dependencies.
See #975
Signed-off-by: Jonathon Anderson <janderson@ciq.com>