news/nzbhydra2: Update to to 2.25.0

Changelog can be viewed at:
https://github.com/theotherp/nzbhydra2/blob/master/changelog.md

nzbhydra2wrapper.py has been replaced with the updated nzbhydra2wrapperPy3.py script
supporting Python 3.5 or higher and removing Python 2 support.

Submitted by: Daniel Shafer <daniel@shafer.cc> (maintainer)
Differential Revision: https://reviews.freebsd.org/D25674