chore(deps): update MariaDB to v11.8 (LTS) (#1715)

* chore(deps): update MariaDB to v11.8 (LTS)

* fix(mariadb): replaced deprecated mysqladmin

* feat(mariadb): make use of healthcheck.sh

overrides/compose.mariadb-secrets.yaml

@@ -3,8 +3,6 @@ services:
     environment:
       MYSQL_ROOT_PASSWORD: !reset null
       MYSQL_ROOT_PASSWORD_FILE: /run/secrets/db_password
-    healthcheck:
-      test: mysqladmin ping -h localhost --password="$(cat /run/secrets/db_password)"
     secrets:
       - db_password