chore(package): update typescript to version 2.3.4

Author: greenkeeper[bot]

package.json

@@ -47,7 +47,7 @@
     "tslint": "5.3.2",
     "tslint-loader": "3.5.3",
     "typedoc": "0.7.1",
-    "typescript": "2.3.3",
+    "typescript": "2.3.4",
     "webpack": "2.6.1"
   },
   "scripts": {