chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeperio-bot

yarn.lock

@@ -4562,9 +4562,9 @@ [email protected], "mkdirp@>=0.5 0", mkdirp@^0.5.1:
   dependencies:
     minimist "0.0.8"
 
-[email protected].16:
-  version "0.5.16"
-  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.16.tgz#661717d5f55b4d2c2e002262d726c83785192a5a"
+[email protected].17:
+  version "0.5.17"
+  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.17.tgz#3c8fef32051d84c3af174d91dc52977dcb0ad7e5"
   dependencies:
     moment ">= 2.9.0"