Update to 4.0.7

• Drop support for Botan 1.10 in favor of Botan 2.x
• Backported bugfixes/improvements from the 4.1.x branch
• Pet portlint and use DISTVERSION
• Added devel/protobuf as dependency as suggested by upstream

PR: 224027
Submitted by: maintainer
Approved by: mat (mentor)
Differential Revision: https://reviews.freebsd.org/D13338