GitHub Action check failed silently due to deprecated library

[zhizhongpu]

check-issue.yml no longer loudly fails due to the use of actions/checkout@v4 which is no longer supported

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Here we fix this by upgrading actions/checkout@v4 to v6.

[github-actions]

Summary

In this issue, we upgraded the check-issue.yml from actions/checkout@v4 - which is no longer supported - to actions/checkout@v6. This allows us to be up to date with our github actions workflow, ensuring nothing is silently failing.

Deliverables:

Codebase as of last commit of the pull request

Last commit in issue branch: 86770ba

Merge commit: 77f44b8