[New gpg version] gnupg-2.3.0: Here comes GnuPG 2.3.0

[github-actions]

This release marks the start of public testing releases eventually
leading to GnuPG 2.4. Although some bugs might linger in this version
it may be used to replace version 2.2.x even for production purposes.

https://github.com/gpg/gnupg/releases/tag/gnupg-2.3.0