chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeperio-bot

yarn.lock

@@ -4837,9 +4837,9 @@ [email protected]:
     prop-types "^15.5.10"
     yargs "^8.0.2"
 
-[email protected].0:
-  version "0.52.0"
-  resolved "https://registry.yarnpkg.com/react-native/-/react-native-0.52.0.tgz#9784663a2aa40b30c87d4c9c06ef26cf8d419d91"
+[email protected].1:
+  version "0.52.1"
+  resolved "https://registry.yarnpkg.com/react-native/-/react-native-0.52.1.tgz#68ca222f9c6a9bbe4a6f95896a5f9611c1311c31"
   dependencies:
     absolute-path "^0.0.0"
     art "^0.10.0"
@@ -5958,7 +5958,7 @@ vinyl@^0.5.0:
     clone-stats "^0.0.1"
     replace-ext "0.0.1"
 
-"vm2@github:patriksimek/vm2#custom_files":
+vm2@patriksimek/vm2#custom_files:
   version "3.5.0"
   resolved "https://codeload.github.com/patriksimek/vm2/tar.gz/7e82f90ac705fc44fad044147cb0df09b4c79a57"