NPA-6224: Push to Postman collection workflow updates

[ClarksonAdam]

Pull Request

🧾 Ticket Link

https://nhsd-jira.digital.nhs.uk/browse/NPA-6224

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📄 Description/Summary of Changes

• Updated workflow to push successfully to the Sandbox and Integration Postman collections
• Updated the workflow trigger to be called if the Postman collection files are updated on push to Master
• Added description to the workflow to improve understanding
• Refactored workflow to have a separate job for Integration and Sandbox
• Removed unused variable from Sandbox Postman collection to resolve error on push

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🧪 Developer Testing Carried Out

• Ran the workflow via dispatch: https://github.com/NHSDigital/validated-relationships-service-api/actions/runs/20815019614

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🧪 Reviewer Testing Required

• Review workflow files
• Run workflow via workflow dispatch if wanted

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✅ Developer Checklist

• PR title follows the format: NPA-XXXX: <short-description>
• Branch name follows the convention: <type>/NPA-XXXX/<short-description>
• Commit messages follow the template: NPA-XXXX: <short-description>
• All acceptance criteria from the Jira ticket are addressed
• Automated tests (unit/integration/API/infrastructure etc. tests) are added or updated
• Assignees and appropriate labels (e.g. terraform, documentation) are added

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👀 Reviewer Checklist

• Changes meet the acceptance criteria of the Jira ticket
• Code is able to be merged (no conflicts and adheres to coding standards)
• Sufficient test evidence is provided (manual and/or automated)
• Infrastructure/operational/build changes are validated (if applicable)

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🚀 Post-merge

After merging and deploying changes to the sandbox, Postman collection or spec examples please run the Run Postman
collection workflow.

This will run the tests within the collection to check that the sandbox is working as expected once deployed.

[github-actions]

This branch is work on a ticket in the NHS Digital NPA JIRA Project. Here's a handy link to the ticket:

NPA-6224