Merge pull request #3592 from angular-ui/greenkeeper/rollup-0.53.1

Update rollup to the latest version 🚀

Author: christopherthielen

package.json

@@ -97,7 +97,7 @@
     "karma-webpack": "2.0.9",
     "lodash": "^4.5.1",
     "replace-in-file": "3.1.0",
-    "rollup": "0.53.0",
+    "rollup": "0.53.1",
     "rollup-plugin-node-resolve": "3.0.0",
     "rollup-plugin-sourcemaps": "^0.4.1",
     "rollup-plugin-uglify": "2.0.1",

yarn.lock

@@ -4143,9 +4143,9 @@ rollup-pluginutils@^2.0.1:
     estree-walker "^0.3.0"
     micromatch "^2.3.11"
 
-[email protected].0:
-  version "0.53.0"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.53.0.tgz#7a3d5a04ba2b0a8f2405899fa6a0ac48da480ed1"
+[email protected].1:
+  version "0.53.1"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.53.1.tgz#58c3a43c8375385b3f92f0dc36fb4e9dbe872542"
 
 safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"