www/squid: upgrade 4.9 -> 4.10
PR: 244026
Submitted by: timp87@gmail.com (maintainer)
Relnotes: http://lists.squid-cache.org/pipermail/squid-announce/2020-February/000107.html
Security: http://www.squid-cache.org/Advisories/SQUID-2020_1.txt
http://www.squid-cache.org/Advisories/SQUID-2020_2.txt http://www.squid-cache.org/Advisories/SQUID-2020_3.txt