chore(deps): update dependency eslint-config-next to v15

Author: renovate[bot]

package.json

@@ -37,7 +37,7 @@
     "@typescript-eslint/eslint-plugin": "^7.2.0",
     "@typescript-eslint/parser": "^7.2.0",
     "eslint": "8.57.1",
-    "eslint-config-next": "14.2.32",
+    "eslint-config-next": "15.5.5",
     "eslint-config-prettier": "9.1.2",
     "prettier": "3.6.2",
     "typescript": "5.9.2"