Bump node-pre-gyp to ^0.12.0 to fix double rebuild bug

Author: ivosabev

package.json

@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "nan": "^2.11.1",
-    "node-pre-gyp": "^0.10.1"
+    "node-pre-gyp": "^0.12.0"
   },
   "devDependencies": {
     "aws-sdk": "^2.42.0",