Bump all build go versions to v1.21.0
Bump the minimum build package version to v1.19.0
Debian "buster" is not longer supported. Security updates have been
discontinued since June 30th 2022. We will build using the latest
version, "bookworm".
This adds in a new boolean flag that when set, prevents LND from writing the system hostname and network interface IPs to the TLS certificate. This will ensure privacy for those that don't want private IP addresses to be exposed on a public facing LND node.