fix claim root test

Author: l0r1s

pallets/subtensor/src/tests/claim_root.rs

@@ -1184,11 +1184,9 @@ fn test_claim_root_with_swap_coldkey() {
         );
 
         // Swap coldkey
-
-        assert_ok!(SubtensorModule::perform_swap_coldkey(
-            &coldkey,
-            &new_coldkey,
-        ));
+        let swap_cost = SubtensorModule::get_key_swap_cost();
+        SubtensorModule::add_balance_to_coldkey_account(&coldkey, swap_cost.to_u64());
+        assert_ok!(SubtensorModule::do_swap_coldkey(&coldkey, &new_coldkey,));
 
         // Check swapped keys claimed values