feat: Send the endpoint_url during the upgrade

[Benjamin-Freoua-Alma]

Reason for change

Linear task

Code changes

• We send the endpoint url during the update of the module 4.6.0
• We normalized the payload returned for the gather CMS data
• We return null in the used_fee_plans key if the array is empty

How to test

As a reviewer, you are encouraged to test the PR locally.

• Update the module in version 4.6.0 and see if the endpoint url is sent to Alma
• Check the data returned for Gather CMS Data without the success key
• Check the unit test about the data returned if used_fee_plans is an array empty

Checklist for authors and reviewers

• The title of the PR uses business wording, not technical jargon, for the changelog readers to understand it
• The PR implements the changes asked in the referenced task / issue
• The automated tests are compliant with the testing strategy
• The tests are relevant, and cover the corner/error cases, not only the happy path
• You understand the impact of this PR on existing code/features
• The changes include adequate logging and Datadog traces
• Documentation is updated (API, developer documentation, ADR, Notion...)

Non applicable

[github-actions]

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[sonarqubecloud]

Quality Gate failed

Failed conditions
25.0% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[github-actions]

❌ E2E tests have failed.
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