package maintainers should be using fedpkg-1.45

[Kevin Fenzi]

Greetings.

All package maintainers should be using at least fedpkg-1.45,
which was released a month ago now.

This version drops checks aginst pdc.fedoraproject.org.
We are retiring pdc and it will no longer be answering requests,
so older versions of fedpkg may error.

Thanks,

kevin