Avoid test runner breaking in TxPoolTest (#7460)

src/Nethermind/Nethermind.TxPool/TxPool.cs

@@ -774,7 +774,7 @@ private void TimerOnElapsed(object? sender, EventArgs e)
 
         internal void ResetAddress(Address address)
         {
-            ArrayPoolList<AddressAsKey> arrayPoolList = new(1);
+            using ArrayPoolList<AddressAsKey> arrayPoolList = new(1);
             arrayPoolList.Add(address);
             _accountCache.RemoveAccounts(arrayPoolList);
         }