chore(deps): update dependency @antfu/eslint-config to v7

Author: renovate[bot]

frontend/package.json

@@ -12,7 +12,7 @@
     "check": "svelte-check --tsconfig ./tsconfig.json"
   },
   "devDependencies": {
-    "@antfu/eslint-config": "^6.0.0",
+    "@antfu/eslint-config": "^7.0.0",
     "@promplate/pattern": "^0.0.3",
     "@sveltejs/vite-plugin-svelte": "^6.0.0",
     "@tsconfig/svelte": "^5.0.4",