Update build command for pypi upload

.github/workflows/python-release.yml

@@ -18,15 +18,28 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.x"
+          python-version: "3.10"
 
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade setuptools wheel twine
+          python -m pip install --upgrade build setuptools wheel twine
+
       - name: Build wheel
         run: |
-          python setup.py build bdist_wheel
+          python -m build --wheel
+
+      # Upload the built pip packages so we can inspect them
+      - name: Upload packages.
+        uses: actions/upload-artifact@v4
+        with:
+          name: pip-packages
+          path: |
+            dist/casement-*.whl
+            dist/casement-*.tar.gz
+          # This is only used if there is a problem with the next step
+          retention-days: 1
+
       - name: Publish to PyPI
         env:
           TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}