Illegal mix of collations during "mariadb-dump --system=user"

Hi

we have script that backup all users with "mariadb-dump --system=user"
we are getting this error since we upgraded the database from Maria 11.2 to 11.8.2
its work ok when we start new instance of 11.8.2 (without any upgrade)

docker exec -it ${docker_id} /usr/bin/mariadb-dump --system=user

/*M!999999- enable the sandbox mode */
– MariaDB dump 10.19-11.8.2-MariaDB, for debian-linux-gnu (x86_64)
–
-- Host: 127.0.0.1 Database:
– ------------------------------------------------------
– Server version 11.8.2-MariaDB-ubu2404-log

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*M!100616 SET @OLD_NOTE_VERBOSITY=@@NOTE_VERBOSITY, NOTE_VERBOSITY=0 */;
mariadb-dump: Couldn't execute 'SELECT CONCAT(QUOTE(u.user), '@', QUOTE(u.Host)) AS u FROM mysql.user u /*!80001 LEFT JOIN mysql.role_edges e ON u.user=e.from_user AND u.host=e.from_host WHERE e.from_user IS NULL */ /*M!100005 WHERE is_role='N' */': Illegal mix of collations (utf8mb4_general_ci,COERCIBLE) and (utf8mb4_uca1400_ai_ci,COERCIBLE) for operation '=' (1267)