Bump ts-node from 8.4.1 to 8.5.4

Bumps [ts-node](https://github.com/TypeStrong/ts-node) from 8.4.1 to 8.5.4.
- [Release notes](https://github.com/TypeStrong/ts-node/releases)
- [Commits](TypeStrong/ts-node@v8.4.1...v8.5.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package-lock.json

@@ -22,7 +22,7 @@
     "sass-loader": "^7.3.1",
     "source-map-loader": "^0.2.4",
     "ts-loader": "^6.2.1",
-    "ts-node": "^8.4.1",
+    "ts-node": "^8.5.4",
     "tslint": "^5.20.1",
     "tslint-config-prettier": "^1.18.0",
     "tslint-plugin-prettier": "^2.0.1",