Don't default `build-artifact download --job` to $BUILDBOX_JOB_ID
Don't default `build-artifact download --job` to $BUILDBOX_JOB_ID

tommeier/agent,Jasperswaagman/agent,Jasperswaagman/agent,buildkite/agent,grosskur/agent,es/agent,es/agent,grosskur/agent,Shopify/agent,grosskur/agent,es/agent,joelmoss/agent,tommeier/agent,joelmoss/agent,buildkite/agent,Shopify/agent,buildkite/agent,Jasperswaagman/agent,joelmoss/agent,tommeier/agent,Shopify/agent