Add SAF Tehnika Aranet4 battery specifications (#4296)

Author: windsurferwill

library/library.json

@@ -7346,6 +7346,12 @@
             "battery_type": "AA",
             "battery_quantity": 2
         },
+        {
+            "manufacturer": "SAF Tehnika",
+            "model": "Aranet4",
+            "battery_type": "AA",
+            "battery_quantity": 2
+        },
         {
             "manufacturer": "Samjin",
             "model": "button",
@@ -11617,4 +11623,4 @@
             "battery_type": "Rechargeable"
         }
     ]
-}
+}