chore(package): update ts-node to version 6.0.0

Author: greenkeeper[bot]

package.json

@@ -14,7 +14,7 @@
     "mocha": "^5.0.4",
     "mocha-parallel-tests": "^1.2.10",
     "nyc": "^11.3.0",
-    "ts-node": "^5.0.1",
+    "ts-node": "^6.0.0",
     "typescript": "^2.6.1"
   },
   "dependencies": {