Update dependency @types/node to v8.9.5

Author: renovate-bot

package.json

@@ -21,7 +21,7 @@
   },
   "devDependencies": {
     "@types/jest": "22.1.0",
-    "@types/node": "8.9.4",
+    "@types/node": "8.9.5",
     "@types/minimist": "1.2.0",
     "jest": "22.1.4",
     "bot-tester": "3.4.2",

yarn.lock

@@ -73,9 +73,9 @@
   version "9.3.0"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-9.3.0.tgz#3a129cda7c4e5df2409702626892cb4b96546dd5"
 
-"@types/[email protected].4":
-  version "8.9.4"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-8.9.4.tgz#dfd327582a06c114eb6e0441fa3d6fab35edad48"
+"@types/[email protected].5":
+  version "8.9.5"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-8.9.5.tgz#162b864bc70be077e6db212b322754917929e976"
 
 "@types/strip-bom@^3.0.0":
   version "3.0.0"