chore(package): update redis-mock to version 0.22.0

Author: greenkeeper[bot]

package.json

@@ -16,7 +16,7 @@
     "nock": "^9.0.13",
     "nyc": "^11.0.2",
     "proxyquire": "^2.0.0",
-    "redis-mock": "^0.18.0",
+    "redis-mock": "^0.22.0",
     "standard": "^11.0.0",
     "tap": "^11.0.0"
   },