Fix Lamia Footprints (#1425)

# Description

Lamia don't have feet, so they instead make huge drag marks when moving
through puddles. :)

# Changelog

:cl:
- fix: Lamia now make drag marks when moving through puddles instead of
regular footprints.

Resources/Prototypes/DeltaV/Entities/Mobs/Species/lamia.yml

@@ -221,6 +221,11 @@
       types:
         Bloodloss: -1
   - type: PortalExempt
+  - type: FootPrints
+    leftBarePrint: "dragging-1"
+    rightBarePrint: "dragging-1"
+    shoesPrint: "dragging-1"
+    suitPrint: "dragging-1"
 
 - type: entity
   save: false