fix upload url

Author: mikex86

.github/workflows/publish.yml

@@ -234,7 +234,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          upload_url: ${{ github.event.release.upload_url }}
           asset_path: ${{ github.workspace }}/python/framework/dist/pypccl-*.whl
           asset_name: pypccl-${{ runner.os }}-${{ matrix.build_type }}-${{ matrix.pccl_build_cuda_support == 'ON' && 'cuda' || 'nocuda' }}-${{ github.run_id }}.whl
           asset_content_type: application/zip