chore(package): update @babel/core to version 7.1.2

Author: greenkeeper[bot]

package.json

@@ -7,7 +7,7 @@
     "documentation": "./bin/documentation.js"
   },
   "dependencies": {
-    "@babel/core": "^7.0.0",
+    "@babel/core": "^7.1.2",
     "@babel/generator": "^7.0.0",
     "@babel/parser": "7.1.0",
     "@babel/plugin-proposal-class-properties": "^7.0.0",