chore(deps): update dependency eslint to v9.21.0

Author: renovate[bot]

package.json

@@ -47,7 +47,7 @@
     "@tailwindcss/aspect-ratio": "0.4.2",
     "autoprefixer": "10.4.20",
     "encoding": "0.1.13",
-    "eslint": "9.20.1",
+    "eslint": "9.21.0",
     "postcss": "8.5.3",
     "prettier": "3.5.2",
     "prettier-plugin-tailwindcss": "0.6.11",