Implement the use of zod

[CalvinWilkinson]

Complete The Item Below

• I have updated the title without removing the 🚧 emoji.

Description

Implement the use of Zod across the codebase. One place is validating the incoming json data from the release notes settings file is correct.

Acceptance Criteria

The items to complete to satisfy the Definition of Done.

• All the unit tests have been executed and passed locally after PR work is complete. (Why? Refer to 'Additional Information' below.)
• Zod library added and implemented across the codebase.

ToDo Items

The items to complete to satisfy the Definition of Done.

• Add a priority label to the issue. Refer to the Priority Type Labels section below.
• Link the issue to the correct milestone (if applicable).

Code of Conduct

• I agree to follow this project's Code of Conduct.