Update dependency npm-check-updates to v16.14.20

Author: renovate[bot]

package-lock.json

@@ -31,7 +31,7 @@
     "express": "4.19.2",
     "mocha": "10.4.0",
     "node-fetch": "2.7.0",
-    "npm-check-updates": "16.14.18",
+    "npm-check-updates": "16.14.20",
     "prettier": "3.2.5",
     "pretty-quick": "4.0.0",
     "react": "18.2.0",