Summary:
Upgraded Metro to 0.65.2 which contains the fix for regression which blocked us previously (https://github.com/facebook/metro/issues/641).
Also upgraded Babel to the latest available versions as anyway most of its packages were upgraded together with Metro.
Reviewed By: passy
Differential Revision: D26777168
fbshipit-source-id: f325e0ba46a95e15605a7b15a793d714b1027061