Update throat dependency to 3.2.0

Summary: it has flow definitions now. OMG!

Reviewed By: cpojer

Differential Revision: D5381183

fbshipit-source-id: bdb3863b24da9802eeeb8a7d08f05d629f735178

Author: davidaurelio

package.json

@@ -207,7 +207,7 @@
     "source-map": "^0.5.6",
     "stacktrace-parser": "^0.1.3",
     "temp": "0.8.3",
-    "throat": "^3.0.0",
+    "throat": "^4.1.0",
     "whatwg-fetch": "^1.0.0",
     "wordwrap": "^1.0.0",
     "write-file-atomic": "^1.2.0",