chore(package): update @octokit/rest to version 16.16.4

Author: greenkeeper[bot]

package.json

@@ -42,7 +42,7 @@
     "version-changelog": "^3.1.0"
   },
   "dependencies": {
-    "@octokit/rest": "^16.2.0",
+    "@octokit/rest": "^16.16.4",
     "is-binary-buffer": "^2.0.0"
   }
 }