chore(package): update typescript to version 2.6.1

Author: greenkeeper[bot]

package.json

@@ -49,7 +49,7 @@
     "tslint": "5.7.0",
     "tslint-loader": "3.5.3",
     "typedoc": "0.9.0",
-    "typescript": "2.5.3",
+    "typescript": "2.6.1",
     "uuid": "3.1.0",
     "webpack": "3.8.1"
   },