chore(package): update ts-node to version 8.1.1

Closes #17

Author: greenkeeper[bot]

package.json

@@ -74,7 +74,7 @@
     "snapshot": "0.0.0",
     "standard-version": "^5.0.0",
     "ts-jest": "24.0.0",
-    "ts-node": "8.0.3",
+    "ts-node": "8.1.1",
     "typescript": "3.3.3333"
   }
 }