Update release.yml

Author: gsheni

.github/workflows/release.yml

@@ -27,8 +27,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: '478-copulas-release-workflow-errors-with-failed-to-push-some-refs-to-httpsgithubcomsdv-devcopulas'
-          # ref: ${{ inputs.candidate && 'main' || 'stable' }}
+          ref: ${{ inputs.candidate && 'stable' || 'main' }}
 
       - name: Set up latest Python
         uses: actions/setup-python@v5