Updated p5-Net-DNS to 1.08.

**** 1.08 [unreleased]

Fix rt.cpan.org #120208

Unable to install 1.07 in local::lib environment

Feature rt.cpan.org #119679

Net::DNS::Nameserver: UpdateHandler for responding to UPDATE packets

Feature rt.cpan.org #75357

Net::DNS::Nameserver: optionmask (similar to headermask) added
to allow user to set EDNS CLIENT-SUBNET option in reply packet

Discontinue support for pre-5.6 perl

Remove pre-5.6 workarounds and outdated language features

(wiz)