Chore: [AEA-0000] - use copilot sync action rather than use this as the main source of truth

[anthony-nhs]

Summary

• Routine Change

Details

• use copilot sync action

[github-actions]

This PR is linked to a ticket in an NHS Digital JIRA Project. Here's a handy link to the ticket:

AEA-0000

[Copilot]

Pull request overview

Updates the repository’s Copilot-instructions syncing approach by removing the README documentation for the old sync workflow and simplifying the sync workflow to delegate to a dedicated sync action.

Changes:

• Removed the “Sync copilot instructions” section from the README workflow index and documentation.
• Replaced the existing reusable sync_copilot.yml workflow implementation with a scheduled/manual workflow that calls NHSDigital/eps-copilot-instructions.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
README.md	Removes documentation for the prior “Sync copilot instructions” workflow usage.
.github/workflows/sync_copilot.yml	Reworks the sync workflow to run on a schedule / manual dispatch and delegate syncing to an external action.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud