Bump xdl version

Author: brentvatne

react-native-scripts/package.json

@@ -35,7 +35,7 @@
     "path-exists": "^3.0.0",
     "progress": "^2.0.0",
     "qrcode-terminal": "^0.11.0",
-    "xdl": "42.0.0",
+    "xdl": "42.4.0",
     "@expo/bunyan": "1.8.10"
   },
   "devDependencies": {
@@ -51,4 +51,4 @@
     "fly-shell": "^2.1.0",
     "fly-watch": "^1.1.1"
   }
-}
+}