Merge pull request #181 from davidyaha/greenkeeper/@types/ioredis-4.0.18

Update @types/ioredis to the latest version 🚀

Author: davidyaha

package-lock.json

@@ -47,7 +47,7 @@
   },
   "devDependencies": {
     "@types/chai": "^4.1.6",
-    "@types/ioredis": "4.0.16",
+    "@types/ioredis": "4.0.18",
     "@types/chai-as-promised": "7.1.1",
     "@types/mocha": "^5.2.5",
     "@types/node": "12.7.4",