chore(deps): update devdependency @luxass/eslint-config to v6

Author: renovate[bot]

package.json

@@ -27,7 +27,7 @@
     "@astrojs/check": "^0.9.4",
     "@astrojs/cloudflare": "^12.6.4",
     "@astrojs/react": "^4.3.0",
-    "@luxass/eslint-config": "^5.3.0",
+    "@luxass/eslint-config": "^6.0.0",
     "@tailwindcss/vite": "^4.1.12",
     "@types/node": "^24.3.0",
     "@types/react": "^19.1.10",