Chore: [AEA-0000] - new workflow to update dev container

[anthony-nhs]

Summary

• Routine Change

Details

• new workflow to update dev container version

[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

Adds a scheduled/manual GitHub Actions workflow to automatically update the repository’s devcontainer version via a reusable workflow from NHSDigital/eps-common-workflows.

Changes:

• Introduces a new workflow that runs on a weekly cron schedule and via workflow_dispatch.
• Calls the shared update-dev-container-version.yml reusable workflow with base_branch: main and GitHub App credentials.

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[Copilot]

This workflow passes GitHub secrets named CREATE_PULL_REQUEST_APP_ID / CREATE_PULL_REQUEST_PEM, but the other eps-common-workflows integrations in this repo use AUTOMERGE_APP_ID / AUTOMERGE_PEM. If these CREATE_PULL_REQUEST_* secrets aren’t configured in the repo settings, the workflow will fail at runtime; consider reusing the existing AUTOMERGE_* secrets (or rename the secrets being referenced) to stay consistent with the rest of the repo’s automation.

Suggested change

	AUTOMERGE_APP_ID: ${{ secrets.CREATE_PULL_REQUEST_APP_ID }}
	AUTOMERGE_PEM: ${{ secrets.CREATE_PULL_REQUEST_PEM }}
	AUTOMERGE_APP_ID: ${{ secrets.AUTOMERGE_APP_ID }}
	AUTOMERGE_PEM: ${{ secrets.AUTOMERGE_PEM }}

[Copilot]

All other references to NHSDigital/eps-common-workflows in this repo are pinned to @5ac2707…, but this workflow pins update-dev-container-version.yml to a different SHA (@d2a4595…). Using multiple pins can make upgrades harder and lead to inconsistent behavior across workflows; consider aligning this pin with the repo’s existing eps-common-workflows SHA (or updating the other workflows in the same PR if a newer version is required).

Suggested change

	uses: NHSDigital/eps-common-workflows/.github/workflows/update-dev-container-version.yml@d2a4595b1bfa59f04c7cecb080a126321d42a333
	uses: NHSDigital/eps-common-workflows/.github/workflows/update-dev-container-version.yml@5ac2707