chore(package): update ts-node to version 8.5.2

Closes #39

Author: greenkeeper[bot]

package.json

@@ -39,7 +39,7 @@
     "codecov": "^3.0.4",
     "mocha": "^5.2.0",
     "nyc": "^13.3.0",
-    "ts-node": "^7.0.1",
+    "ts-node": "^8.5.2",
     "tslint": "^5.11.0",
     "tslint-config-standard": "^8.0.1",
     "typescript": "^3.0.1"