chore(deps): update devdependency @antfu/eslint-config to v4 (#1980)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docs-playground/package.json

@@ -36,7 +36,7 @@
     "vue": "^3.4.31"
   },
   "devDependencies": {
-    "@antfu/eslint-config": "^3.7.3",
+    "@antfu/eslint-config": "^4.2.1",
     "@iconify/json": "^2.2.225",
     "@types/file-saver": "^2.0.7",
     "@types/node": "^22.10.5",