fix: Disable autoUpgrade as it is not used and actually regresses the system constantly

modules/auto-upgrade.nix

@@ -1,6 +1,6 @@
 { pkgs, ... }: {
   system.autoUpgrade = {
-    enable = true;
+    enable = false;
     flake = "git+https://git.newtype.fr/newtype/newtype-org-configurations";
     flags = [ "--option" "accept-flake-config" "true" ];
   };