2nd attempt to fix v5 labeler

[karianna]

WARN: Because of https://github.com/actions/labeler?tab=readme-ov-file#notes-regarding-pull_request_target-event this PR will appear to have failed the GH Action check. We won't know its worked until a subsequent PR is created. This is why we can't have nice things :-)

[github-actions]

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[karianna]

#871 fixes the groovy issue separately