chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

yarn.lock

@@ -3698,9 +3698,9 @@ rollup-watch@^4.3.1:
     require-relative "0.8.7"
     rollup-pluginutils "^2.0.1"
 
-rollup@^0.61.1:
-  version "0.61.1"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.61.1.tgz#65a12f27c2094e6d643fb9cca6a3057190ecc5fe"
+rollup@^0.62.0:
+  version "0.62.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.62.0.tgz#4ca8b3c9582195dc9341ff8a1375f58319b95bfc"
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"