Revert "workflows/sync-shared-config: fix zizmor findings"

Author: p-linnane

.github/workflows/sync-shared-config.yml

@@ -82,7 +82,6 @@ jobs:
           repository: ${{ matrix.repo }}
           path: target/${{ matrix.repo }}
           token: ${{ secrets.HOMEBREW_DOTGITHUB_WORKFLOW_TOKEN }}
-          persist-credentials: false
 
       - name: Configure Git user
         uses: Homebrew/actions/git-user-config@master