Bump @types/node to v20 (#334)

## High Level Overview of Change

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Bump dev dependency @type/node to v20 since we have bumped node version
to 20.

Author: pdp2121

package-lock.json

@@ -34,7 +34,7 @@
     "@types/express": "4.17.21",
     "@types/jest": "^26.0.19",
     "@types/nconf": "^0.10.0",
-    "@types/node": "^14.14.20",
+    "@types/node": "^20.17.30",
     "@types/ws": "^8.5.5",
     "@typescript-eslint/eslint-plugin": "^5.62.0",
     "@typescript-eslint/parser": "^5.62.0",