ct log_list references are out of date, update to v3

[loosebazooka]

I can't tell if this is being used anymore, but the urls in here are very out of date

https://github.com/rustls/ct-logs/blob/main/build.py#L33-L34

https://www.gstatic.com/ct/log_list/log_list.json has not been available for months

it is recommended you update to v3 log lists (v1 is turned down and v2 will be turned down soon): https://groups.google.com/a/chromium.org/g/ct-policy/c/zejEtWAJtEA

update the generator to generate code to use https://www.gstatic.com/ct/log_list/v3/log_list.json and https://www.gstatic.com/ct/log_list/v3/log_list.sig

NOTE: this is not a resource that is meant to be used directly by applications, and is mostly a part of the Chrome CT implementation, we provided a notification as best we could, but ultimately in a best effort manner (developers using this should have a close relationship with the CT ecosystem, as a minimum, following the ct-policy mailing list very carefully: https://groups.google.com/a/chromium.org/g/ct-policy)

[ctz]

Thanks for the note! I think the best course of action for this is to archive the repo for now, as ct-logs is not an important piece of the rustls ecosystem at the current time. But in the future if we integrate CT checking into webpki, that would change.