Update request-promise to the latest version 🚀 (#1365)

* chore(package): update request-promise to version 4.2.5

* chore(package): update lockfile package-lock.json

Author: greenkeeper[bot]

package-lock.json

@@ -97,7 +97,7 @@
     "puppeteer": "2.0.0",
     "react-test-renderer": "16.11.0",
     "request": "2.87.0",
-    "request-promise": "4.2.4",
+    "request-promise": "4.2.5",
     "sass-loader": "8.0.0",
     "style-loader": "1.0.0",
     "svg-prep": "1.0.4",