test: verify issue-triage workflow does not tag maintainer issues

[stack72]

This is a test issue to verify that the fix in #398 correctly identifies maintainers and does not add the needs-triage label or welcome comment when an issue is opened by a maintainer.

[github-actions]

Hi @stack72, thanks for opening this issue!

We appreciate you taking the time to report it. A maintainer will review it as soon as possible.

In the meantime, please make sure you've included all relevant details (steps to reproduce, expected vs actual behaviour, swamp version, etc.) to help us triage it quickly.