fix: upgrade ts-node from 8.6.0 to 8.6.1

Snyk has created this PR to upgrade ts-node from 8.6.0 to 8.6.1.

See this package in NPM:
https://www.npmjs.com/package/ts-node

See this project in Snyk:
https://app.snyk.io/org/fiddlerscode/project/6ebf5035-1959-4188-a1c4-32305dad9abe?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -95,7 +95,7 @@
     "@shelf/jest-mongodb": "^1.1.3",
     "express": "^4.17.1",
     "mongodb": "^3.5.0",
-    "ts-node": "^8.6.0",
+    "ts-node": "^8.6.1",
     "typescript": "^3.7.4"
   },
   "husky": {