Update dependency @types/redis to v2.8.9

Author: renovate-bot

package.json

@@ -32,7 +32,7 @@
   },
   "devDependencies": {
     "@types/jest": "22.2.3",
-    "@types/redis": "2.8.6",
+    "@types/redis": "2.8.9",
     "codecov": "3.0.1",
     "jest": "23.0.0",
     "standard": "10.0.3",

yarn.lock

@@ -10,10 +10,6 @@
     esutils "^2.0.2"
     js-tokens "^3.0.0"
 
-"@types/events@*":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@types/events/-/events-1.1.0.tgz#93b1be91f63c184450385272c47b6496fd028e02"
-
 "@types/[email protected]":
   version "22.2.3"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-22.2.3.tgz#0157c0316dc3722c43a7b71de3fdf3acbccef10d"
@@ -22,11 +18,10 @@
   version "8.0.20"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.0.20.tgz#65c7375255c24b184c215a5d0b63247c32f01c91"
 
-"@types/[email protected].6":
-  version "2.8.6"
-  resolved "https://registry.yarnpkg.com/@types/redis/-/redis-2.8.6.tgz#3674d07a13ad76bccda4c37dc3909e4e95757e7e"
+"@types/[email protected].9":
+  version "2.8.9"
+  resolved "https://registry.yarnpkg.com/@types/redis/-/redis-2.8.9.tgz#3addfdbd81cc773c2446e34225c0911c43b960fc"
   dependencies:
-    "@types/events" "*"
     "@types/node" "*"
 
 abab@^1.0.3: