FINERACT-2513: Refactor CreditBureauConfiguration integration tests to use fineract-client

[DeathGun44]

Description

Migrates CreditBureauConfigurationHelper and its callers from deprecated REST-assured to fineract-client. Removes 12 deprecated methods, adds 5 new static methods using Calls.ok() + CreditBureauConfigurationApi.

Checklist

• Write the commit message as per our guidelines
• Acknowledge that we will not review PRs that are not passing the build ("green") - it is your responsibility to get a proposed PR to pass the build, not primarily the project's maintainers.
• Create/update unit or integration tests for verifying the changes made.
• Follow our coding conventions.
• Add required Swagger annotation and update API documentation at fineract-provider/src/main/resources/static/legacy-docs/apiLive.htm with details of any API changes
• This PR must not be a "code dump". Large changes can be made in a branch, with assistance. Ask for help on the developer mailing list.

[IOhacker]

Can you change the Jira ticket to reflect that this change is being done in the integration test. Currently the title transmit another idea.

[DeathGun44]

@IOhacker Done!

[IOhacker]

LGTM