chore(package): update ts-node to version 8.8.0

Closes #30

Author: greenkeeper[bot]

package.json

@@ -15,7 +15,7 @@
     "mocha": "^5.0.4",
     "mocha-parallel-tests": "^2.0.0",
     "nyc": "^11.3.0",
-    "ts-node": "^7.0.0",
+    "ts-node": "^8.8.0",
     "typescript": "^2.6.1"
   },
   "dependencies": {