pgbouncer: 1.11.0 -> 1.12.0 (#71746)
pgbouncer: 1.11.0 -> 1.12.0 (#71746)

* pgbouncer: 1.11.0 -> 1.12.0

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/pgbouncer/versions

* pgbouncer: enable parallel builds

+ move pkgconfig to nativeBuildInputs

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