chore(package): update regenerator-runtime to version 0.12.0

Author: greenkeeper[bot]

package.json

@@ -58,7 +58,7 @@
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
     "react-test-renderer": "^16.2.0",
-    "regenerator-runtime": "^0.11.1",
+    "regenerator-runtime": "^0.12.0",
     "rollup": "^0.59.1",
     "rollup-plugin-babel": "^3.0.3",
     "rollup-plugin-commonjs": "^9.1.0",