Update the CI to generate sdist

Author: patacca

.github/workflows/release.yml

@@ -31,7 +31,9 @@ jobs:
         with:
           python-version: '3.10'
       - name: Build sdist
-        run: python setup.py sdist
+        run: |
+          python -m pip install -U pip build
+          python -m build --sdist
       - uses: actions/upload-artifact@v3
         with:
           name: artifact