feat!: use the official mongodb image

[antoninguyot]

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[Copilot]

Pull Request Overview

This PR transitions from using a Bitnami MongoDB chart dependency to deploying a temporary MongoDB instance using the official MongoDB Docker image. This breaking change simplifies the database configuration while maintaining backward compatibility through legacy flag support.

• Replaced Bitnami MongoDB chart dependency with custom MongoDB deployment templates
• Updated to use official MongoDB image (mongo:7) instead of Bitnami's image
• Added comprehensive test coverage for the new temporary database functionality

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
values.yaml	Replaces mongodb configuration with temporaryDatabase section using official mongo image
templates/mongodb/deployment.yml	New deployment template for temporary MongoDB instance
templates/mongodb/service.yml	New service template for MongoDB connectivity
templates/mongodb/pvc.yml	New persistent volume claim template for MongoDB data
templates/secrets.yml	Updates MongoDB connection string generation for new deployment
templates/_helpers.tpl	Removes obsolete MongoDB helper function
tests/mongodb_test.yaml	Adds comprehensive test coverage for temporary database functionality
Chart.yaml	Removes MongoDB dependency and updates common chart version
Makefile	Adds dependencies to test target

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