fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-UNDICI-8641354

Author: snyk-bot

package-lock.json

@@ -116,7 +116,7 @@
     "serialize-error": "^8.1.0",
     "targz": "^1.0.1",
     "try-require": "^1.2.1",
-    "undici": "^6.19.8",
+    "undici": "^6.21.1",
     "universalify": "^2.0.0",
     "yargs": "^17.7.2"
   }