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

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v6
 
       - name: Install pnpm
-        uses: pnpm/action-setup@v6
+        uses: pnpm/action-setup@v4
         with:
           run_install: false
 

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",