ci: restore package build for pypi (#466)

Author: NicolasIRAGNE

.github/workflows/publish_to_pypi.yml

@@ -31,6 +31,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           python -m pip install build twine
+          python -m build
           twine check dist/*
       - name: Upload dist artefact
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2