[1.x] Use Official MariaDB Healthcheck Script

[a1383n]

This pull request updates the health check command for the MariaDB service in the configuration to utilize the healthcheck.sh script provided by MariaDB, as recommended in the official documentation.

Key Improvements:

• The new health check script checks connectivity and ensures that InnoDB is initialized.
• By using healthcheck.sh, there is no need to provide the database password, enhancing security by avoiding exposure of credentials.

The script leverages the health check user and is designed specifically for this purpose.