Log Message:
www/squid3: Add security patches

Add two official security patches.

o Denial of service attack when processing ESI responses
o Denial of service attack when processing ESI responses or downloading
  intermediate CA certificates

	http://www.squid-cache.org/Advisories/SQUID-2018_1.txt
	http://www.squid-cache.org/Advisories/SQUID-2018_2.txt

Bump PKGREVISION.