www/squid: Fix SIGSEGV during run rc script
Any kind of "-k" usage is not working now - comment out all "-k" invokations.
Upstream bugreport:
https://bugs.squid-cache.org/show_bug.cgi?id=5390
PR: 284312
MFH: 2025Q2
(cherry picked from commit 5cd00d39487925356b911041673b770074bf5626)