make NPCs a pixel less thicc

Shared/NPC.cs

@@ -53,7 +53,7 @@ namespace SemiColinGames {
     private readonly Vector2 eyeOffset = new Vector2(4, -9);
 
     private readonly FSM<NPC> fsm;
-    private readonly Vector2 halfSize = new Vector2(12, 24);
+    private readonly Vector2 halfSize = new Vector2(11, 24);
 
     public NPC(Vector2 position, int facing) {
       sprite = Sprites.Executioner;