chore(package): update bindings to version 1.5.0

Author: greenkeeper[bot]

package.json

@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "binding": "^3.0.3",
-    "bindings": "~1.3.0",
+    "bindings": "~1.5.0",
     "mocha": "^5.0.0",
     "nan": "^2.8.0",
     "nyc": "^12.0.1",