Change Springalds damage type to Siege please

As mentioned in the title Springalds feel a tad too weak in the current meta. With Springalds no longer receiving benefits from the blacksmith it becomes noticeably weaker the more ranged armor upgrades the enemy has. They are helpless against any other siege unit due to them resisting ranged and dealing siege damage. Outside of the intended anti infantry it looses to anything else. Let them deal siege damage again, that way they can hold their own again and can actually serve as a valid light siege alternative to mangonels.

From my experience springalds are best used when massed , the piercing damage is the main idea , you can literally one shot a full line of enemy units