Update dependency bot-tester to v3.4.4

Author: renovate-bot

package.json

@@ -24,7 +24,7 @@
     "@types/node": "8.9.4",
     "@types/minimist": "1.2.0",
     "jest": "22.1.4",
-    "bot-tester": "3.4.2",
+    "bot-tester": "3.4.4",
     "ts-jest": "22.0.2",
     "ts-node": "4.1.0",
     "tslint": "5.9.1",

yarn.lock

@@ -783,9 +783,9 @@ boom@5.x.x:
   dependencies:
     hoek "4.x.x"
 
-bot-tester@3.4.2:
-  version "3.4.2"
-  resolved "https://registry.yarnpkg.com/bot-tester/-/bot-tester-3.4.2.tgz#0e0132ad530ee7648940028ec31321540f862642"
+bot-tester@3.4.4:
+  version "3.4.4"
+  resolved "https://registry.yarnpkg.com/bot-tester/-/bot-tester-3.4.4.tgz#c5b62f4f999fe6bc9d1f5e66c984100272e330be"
   dependencies:
     ava "^0.25.0"
     bluebird "^3.5.0"