net/hblock: Update to 2.1.7

Simply adds a few more blocklists.

Changelog: https://github.com/hectorm/hblock/compare/v2.1.6...v2.1.7

PR: 250321
Submitted by: Lewis Cook <vulcan@wired.sh> (maintainer)
Approved by: arrowd (mentor)
Differential Revision: https://reviews.freebsd.org/D26768