chore(ci): Remove old Docker Compose configuration for MongoDB

[dev-bre]

Description

This pull request removes the MongoDB service configuration from the docker-compose.yml file. This means the application will no longer start a MongoDB container using Docker Compose.

• Removal of MongoDB service:
  • Deleted the mongo_bp service definition, including image, environment variables, port mapping, and volumes.
  • Removed the associated mongo_volume_bp volume declaration.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Related Issue

Closes #(issue number)

How Has This Been Tested?

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Screenshots (if applicable)

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Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes