Update python-release.yaml

Author: saul-data

.github/workflows/python-release.yaml

@@ -37,6 +37,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           python3 -m pip install --upgrade twine
+          python3 -m pip install --upgrade build
           if [ -f tests/requirements.txt ]; then pip install -r tests/requirements.txt; fi
 
       - name: Update pyproject.toml version ${{ steps.get_version.outputs.VERSION }}