Do not log if repo is private

[marsavar]

What does this change?

The action is outputting detailed logs, which is not great if a repository is private.
For now, I think it's easier to simply not print logs if a repository is private, unless there's a compelling strategy to adopt a different strategy (such as making the prnouncer-config repo itself private)

I've also got rid of the getset library which inflates the binary size a little bit because it produces generated code for the derived traits where a pub modifier on the structs is enough.