update to version 2.0.17;
changes: https://raw.githubusercontent.com/jedisct1/dnscrypt-proxy/2.0.17/ChangeLog while here, silence portlint move USE_* variables to a point after USES; extra item placed in the USES/USE_x section got a new line, for example, "GH_ACCOUNT".
Approved by: beat (mentor), rene (mentor)
Differential Revision: https://reviews.freebsd.org/D17509