chore(package): update ts-node to version 8.5.4

Closes #17

Author: greenkeeper[bot]

demo/package.json

@@ -59,7 +59,7 @@
     "protractor": "~5.4.2",
     "reflect-metadata": "~0.1.10",
     "ts-loader": "~5.3.3",
-    "ts-node": "~8.0.3",
+    "ts-node": "~8.5.4",
     "tslint": "~5.9.1",
     "typescript": "~3.2.4",
     "webpack-cli": "^3.3.2",