ci: Update cibuildwheel configuration and build source distribution

.github/workflows/native.yml

@@ -330,9 +330,28 @@ jobs:
           cd ..
 
 
+  build-python-sdist:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    needs: [ rust-clippy, rust-doc, rust-tests, rustfst-python-bench, rustfst-python, python-doc ]
+    if: startsWith(github.ref, 'refs/tags/rustfst-v')
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build source distribution
+        run: pipx run build --sdist
+
+      - name: Upload source distribution as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: cibw-sdist
+          path: dist/*.tar.gz
+
+
   publish-python-wheels:
     name: Publish Python Wheels to PyPI
-    needs: [ rust-clippy, rust-doc, rust-tests, rustfst-python-bench, rustfst-python, python-doc ]
+    needs: [ build-python-sdist ]
     if: startsWith(github.ref, 'refs/tags/rustfst-v')
 
     strategy:
@@ -365,10 +384,18 @@ jobs:
           # On an Linux Intel runner with qemu installed, build Intel and ARM wheels
           CIBW_ARCHS_LINUX: "auto"
 
+      - name: Upload wheels as artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl
+
       - name: Setup Python
         uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
 
-      - name: Upload
+      - name: Upload sdist and wheels to PyPI
         run: |
           python -m pip install twine
-          python -m twine upload -u "__token__" -p ${{ secrets.PYPI_PASSWORD }} -r pypi --verbose wheelhouse/*
+          python -m twine upload -u "__token__" -p ${{ secrets.PYPI_PASSWORD }} -r pypi --verbose wheelhouse/* dist/*.tar.gz