Update dependency eslint to v9

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

frontend/package.json

@@ -49,7 +49,7 @@
     "@typescript-eslint/eslint-plugin": "6.21.0",
     "@typescript-eslint/parser": "6.21.0",
     "autoprefixer": "10.4.20",
-    "eslint": "8.57.1",
+    "eslint": "9.19.0",
     "eslint-config-next": "15.1.6",
     "eslint-config-prettier": "10.0.1",
     "postcss": "8.5.1",