chore(deps): update devdependency @antfu/eslint-config to v9

package.json

@@ -22,7 +22,7 @@
     "vue-router": "^4.6.4"
   },
   "devDependencies": {
-    "@antfu/eslint-config": "^7.4.3",
+    "@antfu/eslint-config": "^9.0.0",
     "@robonen/tsconfig": "^0.0.2",
     "@types/jsdom": "^27.0.0",
     "@types/node": "^24.10.13",
@@ -30,7 +30,7 @@
     "@vue/test-utils": "^2.4.6",
     "eslint": "^9.39.3",
     "eslint-plugin-vuejs-accessibility": "^2.5.0",
-    "jsdom": "^29.1.1",
+    "jsdom": "^27.4.0",
     "vite": "^7.3.1",
     "vitest": "^4.0.18",
     "vue-tsc": "^3.2.4"