squid: 4.14 -> 4.15
squid: 4.14 -> 4.15

Fixes CVE-2021-28116, CVE-2021-31806, CVE-2021-31807, CVE-2021-31808,
CVE-2021-28652, CVE-2021-28662 and CVE-2021-28651.

https://github.com/squid-cache/squid/security/advisories/GHSA-pxwq-f3qr-w2xf
https://github.com/squid-cache/squid/security/advisories/GHSA-m47m-9hvw-7447
https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h
https://github.com/squid-cache/squid/security/advisories/GHSA-572g-rvwr-6c7f
https://github.com/squid-cache/squid/security/advisories/GHSA-ch36-9jhx-phm4

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs