Bump react-dom from 16.2.0 to 16.2.1

Bumps [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) from 16.2.0 to 16.2.1.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/HEAD/packages/react-dom)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -23,7 +23,7 @@
     "nodemon": "^1.13.3",
     "now-env": "^3.0.1",
     "react": "^16.2.0",
-    "react-dom": "^16.2.0",
+    "react-dom": "^16.2.1",
     "shopify-api-node": "^2.10.0"
   }
 }