Log Message:
squid6: update to 6.11

Changes in squid-6.11 since 6.10 (15 Sep 2024)
        - Fix Kerberos detection when cross-compiling
        - Improve robustness of DNS code on reconfigure
        - Prevent slow memory leak in TCP DNS queries
        - Improve errors emitted when invalid ACLs are parsed
        - Remove some unused code and obsolete compatiblity hacks