Update dependency ts-node to v8.9.1

Author: renovate-bot

package-lock.json

@@ -47,7 +47,7 @@
     "rollup-plugin-terser": "5.3.0",
     "rollup-plugin-typescript": "1.0.1",
     "should": "13.2.3",
-    "ts-node": "8.8.2",
+    "ts-node": "8.9.1",
     "tslint": "6.1.1",
     "tslint-config-prettier": "1.18.0",
     "typedoc": "0.17.4",