Updated external write role with policies for audit copy#314

TOEL2 merged 3 commits intomainNHSDigital/eligibility-signposting-api:mainfrom

feature/rgjb-te-eli-422-s3_audit_copy_terraform_changesNHSDigital/eligibility-signposting-api:feature/rgjb-te-eli-422-s3_audit_copy_terraform_changesCopy head branch name to clipboard