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

Author: renovate[bot]

package.json

@@ -64,7 +64,7 @@
     "@stylistic/eslint-plugin": "2.13.0",
     "@tailwindcss/typography": "^0.5.16",
     "@typescript-eslint/eslint-plugin": "8.20.0",
-    "eslint": "9.18.0",
+    "eslint": "9.21.0",
     "eslint-plugin-react": "^7.37.4",
     "eslint-plugin-tailwindcss": "3.18.0",
     "typescript": "~5.7.3",