chore(package): update uglify-js to version 3.7.5 (#742)

Summary:
## Changelog
Pull Request resolved: https://github.com/facebook/flipper/pull/742

Reviewed By: jknoxville

Differential Revision: D19374015

Pulled By: passy

fbshipit-source-id: 3859006dc5efe0890625b5b5c32cb056a4bdbf24

src/plugins/sections/d3/package.json

@@ -58,7 +58,7 @@
     "jsdom": "^15.1.1",
     "seedrandom": "^3.0.5",
     "smash": "0.0",
-    "uglify-js": "^3.7.2",
+    "uglify-js": "^3.7.5",
     "vows": "0.8"
   },
   "scripts": {