Update dependency typescript to v2.9.2

Author: renovate[bot]

package.json

@@ -67,6 +67,6 @@
     "material-design-icons": "^3.0.1",
     "ts-node": "~4.1.0",
     "tslint": "~5.9.1",
-    "typescript": "2.7.2"
+    "typescript": "2.9.2"
   }
 }