chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

yarn.lock

@@ -3707,9 +3707,9 @@ rollup-watch@^4.3.1:
     require-relative "0.8.7"
     rollup-pluginutils "^2.0.1"
 
-rollup@^0.59.1:
-  version "0.59.1"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.59.1.tgz#86cbceaecd861df1317a0aa29207173de23e6a5d"
+rollup@^0.60.5:
+  version "0.60.5"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.60.5.tgz#6cd0c7e54d9aad477b7c03a66ddad68e8aea11c4"
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"