build: avoid using custom GITHUB_TOKEN

Author: Planeshifter

.github/workflows/labeler_needs_changes.yml

@@ -52,7 +52,6 @@ jobs:
         # Pin action to a known commit SHA for reproducibility:
         uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
         with:
-          github-token: ${{ secrets.CHATBOT_GITHUB_TOKEN }}
           script: |
             await github.rest.issues.addLabels({
               'owner': context.repo.owner,