Fix test

test/tradex/accounts_test.exs

@@ -39,7 +39,7 @@ defmodule Tradex.AccountsTest do
   describe "get_user!/1" do
     test "raises if id is invalid" do
       assert_raise Ecto.NoResultsError, fn ->
-        Accounts.get_user!(-1)
+        Accounts.get_user!(UUIDv7.generate())
       end
     end