chore: fix nixpkgs 25.05 deprecation warnings

package/deploy/default.nix

@@ -1,4 +1,4 @@
-{ inputs, symlinkJoin, dash, hectic, ssh-to-age, system }:
+{ inputs, symlinkJoin, dash, hectic, ssh-to-age, stdenv }:
 let
   shell = "${dash}/bin/dash";
   bashOptions = [
@@ -11,7 +11,7 @@ let
     name = "deploy";
     runtimeInputs = [
       ssh-to-age
-      inputs.nixos-anywhere.packages.${system}.nixos-anywhere
+      inputs.nixos-anywhere.packages.${stdenv.hostPlatform.system}.nixos-anywhere
     ];
 
     text = ''

package/py3-marzban.nix

@@ -1,4 +1,4 @@
-{ self,fetchPypi, python3Packages, system }: python3Packages.buildPythonPackage rec {
+{ self,fetchPypi, python3Packages, stdenv }: python3Packages.buildPythonPackage rec {
     pname = "marzban";
     version = "0.4.3";
     
@@ -22,7 +22,7 @@
       pydantic
       paramiko
       sshtunnel
-    ]) ++ (with self.packages.${system}; [
+    ]) ++ (with self.packages.${stdenv.hostPlatform.system}; [
       py3-datetime
     ]);