Metro and Babel upgraded

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

desktop/patches/metro+0.65.2.patch

@@ -0,0 +1,13 @@
+diff --git a/node_modules/metro/src/lib/getPreludeCode.js b/node_modules/metro/src/lib/getPreludeCode.js
+index f73c6ec..fc313ec 100644
+--- a/node_modules/metro/src/lib/getPreludeCode.js
++++ b/node_modules/metro/src/lib/getPreludeCode.js
+@@ -14,7 +14,7 @@ function getPreludeCode({ extraVars, isDev, globalPrefix }) {
+     "__BUNDLE_START_TIME__=this.nativePerformanceNow?nativePerformanceNow():Date.now()",
+     `__DEV__=${String(isDev)}`,
+     ...formatExtraVars(extraVars),
+-    "process=this.process||{}",
++    "process=process||this.process||global.process||{}",
+     `__METRO_GLOBAL_PREFIX__='${globalPrefix}'`
+   ];
+   return `var ${vars.join(",")};${processEnv(