One of the transitive dependencies of preflight does not have a license, which means preflight cannot be used in things like the Google Cloud Marketplace (cf. jetstack/jetstack-secure-gcm#47).
https://github.com/jetstack/preflight/blob/2130eb7bf2377e72e3b363e1d391802a56e3117c/go.sum#L188
It seems like the version v1.1.10 does not have a LICENSE file, although there is one on master. An issue has already been filed in 2021, but the author hasn't answered yet. Could we use a specific commit that has the LICENSE file instead of v1.1.10?
(this is a non-blocking issue with regards to jetstack-secure-gcm)