dns/dnsmasq: update to 2.82 (regression and bug fixes)

Quoting Simon Kelley "This fixes a nasty problem
introduced in 2.81 which causes random crashes on systems where there's
significant DNS activity over TCP. It also fixes DNSSEC validation
problems with zero-TTL DNSKEY and DS records."

Changelog:
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=blob;f=CHANGELOG;h=e6a223119ffcd9ead6cb15153cd49bd3c61e114f;hb=f60fea1fb0a288011f57a25dfb653b8f6f8b46b9#l1

MFH: 2020Q3 (regression and bug fixes)