pin docker version

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

nixos/docker.nix

@@ -1,5 +1,5 @@
-# Docker is a containerization platform that allows you to run applications in isolated environments called containers.
-{config, ...}: {
+{config, pkgs, ...}: {
   virtualisation.docker.enable = true;
+  virtualisation.docker.package = pkgs.docker_29;
   users.users."${config.var.username}".extraGroups = ["docker"];
 }