chore(package): update @babel/generator to version 7.1.3

Author: greenkeeper[bot]

package.json

@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "@babel/core": "^7.1.2",
-    "@babel/generator": "^7.0.0",
+    "@babel/generator": "^7.1.3",
     "@babel/parser": "7.1.0",
     "@babel/plugin-proposal-class-properties": "^7.0.0",
     "@babel/plugin-proposal-decorators": "^7.0.0",