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

Closes #61

Author: greenkeeper[bot]

package.json

@@ -55,7 +55,7 @@
     "karma-jasmine-html-reporter": "^1.4.0",
     "ng-packagr": "^4.7.0",
     "protractor": "^5.4.2",
-    "ts-node": "~8.1.0",
+    "ts-node": "~8.5.4",
     "tsickle": "^0.34.3",
     "tslib": "^1.9.3",
     "tslint": "~5.16.0",