chore(deps): update devdependency undici to v8

Author: renovate[bot]

packages/nuxt-cli/package.json

@@ -84,7 +84,7 @@
     "rollup-plugin-visualizer": "^7.0.1",
     "tsdown": "^0.21.7",
     "typescript": "^6.0.2",
-    "undici": "^7.24.7",
+    "undici": "^8.0.2",
     "unplugin-purge-polyfills": "^0.1.0",
     "vitest": "^4.1.2",
     "youch": "^4.1.1"