ci: use @floatpanebot token (#1014)

Author: andrinoff

.github/workflows/bot-build.yml

@@ -163,7 +163,7 @@ jobs:
       - name: Create preview release and upload assets
         id: release
         env:
-          GH_TOKEN: ${{ github.token }}
+          GH_TOKEN: ${{ secrets.HOMEBREW_GITHUB_TOKEN }}
         run: |
           TAG="preview-pr${{ github.event.issue.number }}"
           SHA="${{ steps.pr.outputs.sha }}"