workflows/triage: fixes for github-script@v5

[Bo98]

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Broke after #12119.

[Bo98]

This of course doesn't fix it failing on this PR as it only works after this is merged. Bit of a blind game.

[dawidd6]

And we can't merge this because the required check is failing...

[Bo98]

Temporarily lifted the "include admins" restriction so we can merge.