Update device: Water_sensor_3RWS18BZ by Third_Reality (#1839)

Author: github-actions[bot]

custom_components/battery_notes/data/library.json

@@ -5787,6 +5787,12 @@
             "manufacturer": "Zooz",
             "model": "ZSE44",
             "battery_type": "CR2450"
+        },
+        {
+            "manufacturer": "Third Reality",
+            "model": "Water sensor (3RWS18BZ)",
+            "battery_type": "AAA",
+            "battery_quantity": 2
         }
     ]
 }