fix(deps): update dependency @types/node to v20 (#56)

Co-authored-by: whitesource-ets[bot] <whitesource-ets[bot]@users.noreply.github.ibm.com>

Author: 2 people

package-lock.json

@@ -38,7 +38,7 @@
     "node": ">=14.0.0"
   },
   "dependencies": {
-    "@types/node": "^12.0.8",
+    "@types/node": "^20.0.0",
     "extend": "^3.0.2",
     "ibm-cloud-sdk-core": "^4.0.3"
   },