fix(docker): add mariadb-connector-c for mariadb client installation

Add mariadb-connector-c package to ensure proper connectivity when installing mariadb clients for versions 10.11 and 11.4

feat: add mariadb support and full instance dump/restore

- add mariadb as a supported database type with dedicated client installation
- implement full instance dump/restore for mysql, mariadb, postgresql and mongodb
- update mysql version defaults and add fallback for mysql 5.7
- improve s3 upload script with endpoint url support
- update documentation with new features and examples

fix(s3_upload): ensure proper return status handling in multipart upl…

…oad function

fix: correct mongodump command syntax for improved error handling

chore: update Dockerfiles and scripts to improve documentation and co…

…nsistency

- Translate comments from Portuguese to English for better accessibility
- Refine comments for clarity and consistency across scripts
- Ensure proper permissions and environment variable expectations are documented

docs: update README with PostgreSQL version availability by Alpine ba…

…se image and improve error message formatting in notify_slack.sh

chore: update Dockerfiles to use Alpine 3.19 and refine build workflo…

…w for Alpine versions

chore: refactor Dockerfiles to use dynamic Alpine versioning and upda…

…te build workflow for multiple Alpine versions

chore: update base image to alpine 3.21 in Dockerfiles for dump and r…

…estore

fix(backup): improve aws s3 backup cleanup script robustness

- Add AWS region handling and role assumption support
- Use temporary files for error handling and debugging
- Skip cleanup on listing failures instead of exiting with error