Update code comment

Author: parkerbxyz

lib/request.js

@@ -9,8 +9,8 @@ export default request.defaults({
     "user-agent": "actions/create-github-app-token",
   },
   baseUrl,
-  // Use undici as the fetch implementation because we rely on proxy support which is only available in node22 and later,
-  // which the GitHub Actions runner doesn't support yet.
+  // Use undici for the fetch implementation because we rely on its built-in proxy support added in v6.14/15.
+  // Node.js v20 uses an older undici version, and the GitHub Actions runner doesn't support node22 yet.
   request: {
     fetch: undiciFetch,
   },