fix: remove obsolete 'version' attribute from docker-compose files

[DharunKumar04]

Description

This PR removes the obsolete version attribute from the docker-compose.yml files. The version attribute is no longer required in Docker Compose v2 and above, and including it causes the following warning:

WARN[0000]: the attribute version is obsolete, it will be ignored, please remove it to avoid potential confusion.

Changes Made

• Removed the version attribute from all docker-compose.yml, docker-compose-inits.yml , docker-compose.penpot.yml files.

Impact

• Eliminates the warning during Docker Compose operations.
• Ensures compatibility with the latest Docker Compose standards.

Testing

• Verified that the services in the updated docker-compose.yml files work as expected.

Reference

• For more details, kindly refer to the version-top-level-element-obsolete.

Please review and merge this PR. Let me know if further changes are required. Thank you!