chore(deps): update dependency rollup to v0.68.2 (#372)

Author: renovate[bot]

package.json

@@ -62,7 +62,7 @@
     "react": "16.7.0",
     "react-dom": "16.7.0",
     "react-test-renderer": "16.7.0",
-    "rollup": "0.61.1",
+    "rollup": "0.68.2",
     "rollup-plugin-babel": "3.0.5",
     "rollup-plugin-commonjs": "9.2.0",
     "rollup-plugin-node-globals": "1.4.0",

yarn.lock

@@ -7259,9 +7259,10 @@ 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@0.68.2:
+  version "0.68.2"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.68.2.tgz#c26afb5d981ca7a1a32f76087dbde9dad4fcc653"
+  integrity sha512-WgjNCXYv7ZbtStIap1+tz4pd2zwz0XYN//OILwEY6dINIFLVizK1iWdu+ZtUURL/OKnp8Lv2w8FBds8YihzX7Q==
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"