fix: Configure git to use gh for authentication

Add gh auth setup-git to allow git push to use GH_TOKEN for authentication

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: polidog

.github/workflows/update-formula.yml

@@ -41,4 +41,5 @@ jobs:
         run: |
           git config --global user.name "github-actions[bot]"
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          gh auth setup-git
           ./scripts/update-formula.sh "${{ steps.version.outputs.VERSION }}"