Fetch full history in Python CI workflow

Set `fetch-depth: 0` on the checkout step in `.github/workflows/python-package.yml` so the workflow has complete git history when running against release tags (including `workflow_dispatch` tag refs). This avoids shallow-clone limitations in downstream release/versioning steps.

Author: C-Achard

.github/workflows/python-package.yml

@@ -60,6 +60,7 @@ jobs:
         uses: actions/checkout@v6
         with:
           ref: ${{ github.event_name == 'workflow_dispatch' && format('refs/tags/{0}', inputs.release_tag) || github.ref }}
+          fetch-depth: 0
 
       - name: Set up Python
         uses: actions/setup-python@v6