net/relayd: Update to 7.3.2023.05.09-p2
This version is in sync with the relayd version present in the OpenBSD
main branch as of 2023.05.09.
While here:
- Switch to a new repository where FreeBSD relayd is now maintained. This is where we moved many of the port's patches to clean up the files/ directory.
- Take maintainership as agreed via email with the current maintainer.
Sponsored by: Modirum MDPay
Sponsored by: Klara, Inc.
Co-authored-by: Dave Cottlehuber <dch@FreeBSD.org>