Bump metro to v0.24.3

Reviewed By: mjesun

Differential Revision: D6617297

fbshipit-source-id: 5216f2862cbf7707a57c4257f0e2c93f9dfab667

package.json

@@ -170,8 +170,8 @@
     "graceful-fs": "^4.1.3",
     "inquirer": "^3.0.6",
     "lodash": "^4.16.6",
-    "metro": "^0.24.2",
-    "metro-core": "^0.24.2",
+    "metro": "^0.24.3",
+    "metro-core": "^0.24.3",
     "mime": "^1.3.4",
     "minimist": "^1.2.0",
     "mkdirp": "^0.5.1",