Meta/CI: Give actions/github-script access to ladybird-bot token

.github/workflows/lintcommits.yml

@@ -13,6 +13,7 @@ jobs:
     steps:
       - name: Lint PR commits
         uses: actions/github-script@v7
+        github-token: ${{ secrets.LADYBIRD_BOT_TOKEN }}
         with:
           script: |
             const excludedBotIds = [