Fix permission for pull request labelling script (#61525)

While its the `issues` API we use for labelling, it seems that GitHub
still wants PR permissions for those. Hence, fixing here.

Release Notes:

- N/A
9a8e09be0aFinn Evers committed on 7/23/2026, 12:28:16 PM· committed by GitHubparentaa56033
1 file changedLine totals unavailable