postgresql: use postgresql_13 instead of postgresql_11

pkgs/top-level/all-packages.nix

···
     postgresql_13
     postgresql_14
   ;
-  postgresql = postgresql_11.override { this = postgresql; };
+  postgresql = postgresql_13.override { this = postgresql; };
   postgresqlPackages = recurseIntoAttrs postgresql.pkgs;
-  postgresql11Packages = pkgs.postgresqlPackages;
+  postgresql11Packages = recurseIntoAttrs postgresql_11.pkgs;
+  postgresql12Packages = recurseIntoAttrs postgresql_12.pkgs;
+  postgresql13Packages = pkgs.postgresqlPackages;
 
   postgresql_jdbc = callPackage ../development/java-modules/postgresql_jdbc { };