configs: sandbox: Enable zip command
What is not being built and tested in CI, breaks. Enable the 'zip'
command in sandbox to get it build tested in preparation for an
actual unit test.
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
authored by