chore(deps): update devdependency @codspeed/vitest-plugin to v4

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "ufo": "^1.6.1"
   },
   "devDependencies": {
-    "@codspeed/vitest-plugin": "^3.1.1",
+    "@codspeed/vitest-plugin": "^4.0.1",
     "@nuxt/eslint-config": "^1.9.0",
     "@types/node": "^22.18.1",
     "@vitest/coverage-v8": "^3.2.4",