fix(package): update redis to version 3.0.0

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "ejs": "^2.6.1",
     "express": "^4.16.4",
     "mongodb": "^3.2.3",
-    "redis": "^2.8.0",
+    "redis": "^3.0.0",
     "bcryptjs": "^2.4.3",
     "jsonwebtoken": "^8.5.1",
     "inquirer": "^6.3.1",