Changes

Update debian-policy for 4.7.0

perl -Ilib -wE'use Lintian::Deb822; use Lintian::Data::Policy::Releases; my $r = Lintian::Data::Policy::Releases->new; $r->refresh(0, "data");'

Downloads the debian-policy changelog from salsa without UNRELEASE part

Signed-off-by: Bo YU <tsu.yubo@gmail.com>