freun.dev: update postgres to 17

freun.dev/services.nix

@@ -1,4 +1,4 @@
-{ ... }:
+{ pkgs, ... }:
 {
   networking.firewall.allowedTCPPorts = [ 80 443 ];
 
@@ -8,7 +8,10 @@
     email = "admin@pimeys.pm";
   };
 
-  services.postgresql.enable = true;
+  services.postgresql = {
+    enable = true;
+    package = pkgs.postgresql_17;
+  };
 
   virtualisation.podman = {
     enable = true;