Add version to abyss weapon data

public/data/weapons/abyss.json

@@ -18,5 +18,6 @@
       "name": "Key of Creation",
       "description": "In co-op raids, Valkyries deal 22.0% bonus Total DMG through weapon skills, Combo/Charged ATKs, and Ultimates. For 6s after casting a Weapon Active, Valkyries restore 1.5% max HP each time they deal DMG (can only be triggered once per second)."
     }
-  ]
+  ],
+  "version": 5.1
 }