fix(package): update redis to version 3.0.1

Closes #8

Author: greenkeeper[bot]

package.json

@@ -19,7 +19,7 @@
     "cheerio": "^1.0.0-rc.3",
     "dotenv": "^8.0.0",
     "express": "^4.17.1",
-    "redis": "^2.8.0",
+    "redis": "^3.0.1",
     "request": "^2.88.0",
     "request-promise": "^4.2.4",
     "rss": "^1.2.2",