Update production court.store.justice.gov.uk subdomains

[AntonyBishop]

👀 Purpose

• This PR replaces three production court.store.justice.gov.uk A RECORDS with CNAMES. This change is in support of migration to new applications.

♻️ What's changed

• Replace A RECORD libra.court.store.justice.gov.uk with CNAME libra.court.store.justice.gov.uk
• Replace A RECORD cms.court.store.justice.gov.uk with CNAME cms.court.store.justice.gov.uk
• Replace A RECORD staff.court.store.justice.gov.uk with CNAME staff.court.store.justice.gov.uk

📝 Notes

• Request

• DO NOT MERGE BEFORE 23:30 ON FRIDAY 17TH JANUARY

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ YAML	prettier	1	1	0	0.67s
✅ YAML	yamllint	1		0	0.61s

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