GLSD-19573: Add tags to audit event

[finlaypugh07]

Pull Request for GLSD-19573

Description

Implement 'DeallocateEnrolment' audit event for bulk de-enrolment file processing job

Author Checklist

• Acceptance criteria for the ticket have been met
• Relevant unit and integration tests have been added. Code coverage has not dropped below the minimum threshold — aim for 100% where possible
• If changes have been made to a microservice, the run_all_tests shell script has been executed
• Dependencies have been reviewed — straightforward updates have been applied and tickets have been raised for any outstanding complex dependency updates
• Any newly introduced warnings have been fixed, and pre-existing warnings carried over have been addressed where doing so does not introduce scope creep — implemented in a separate commit
• PR BOT comments have been addressed where scope allows; a new ticket has been raised for anything that falls outside the current scope
• Screenshots of any new functionality have been attached to the relevant ticket(s)
• Acceptance tests have been run locally and changes have been manually tested before raising this PR
• Where applicable, smoke tests have been run and manual checks have been performed in QA

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Reviewer Checklist

• The PR builder has passed
• Acceptance criteria for the ticket have been met
• There are no merge conflicts on the PR
• The run_all_tests shell script has been executed (runs test suites, checks coverage, and checks for dependency updates)
• Test coverage has not dropped below the value on the main branch
• Tests have been added to cover any new logic, including edge cases
• Changes have been manually tested
• Performance tests have been run and results recorded for any ticket of 5 points or more (where available and covering changed functionality)
• Code has been written following best practices

[CPardeep]

Approved for hotfix

[CPardeep]

Approved fro Hotfix