chore(deps): update dependency @antfu/eslint-config to v6

Author: renovate[bot]

package.json

@@ -54,7 +54,7 @@
     }
   },
   "devDependencies": {
-    "@antfu/eslint-config": "^4.14.1",
+    "@antfu/eslint-config": "^6.2.0",
     "@sxzz/prettier-config": "^2.2.3",
     "@tsconfig/node22": "^22.0.2",
     "@types/node": "^22.15.17",