Update GitHub action.

.github/workflows/python.yml

@@ -15,6 +15,7 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
         os:
           - ubuntu-latest
           - macos-latest
@@ -37,7 +38,7 @@ jobs:
           python -m unittest
       - name: Pack
         working-directory: cython
-        run: python -m build --sdist --wheel
+        run: python -m build
       - if: matrix.os == 'ubuntu-latest'
         name: Upload artifact
         uses: actions/upload-artifact@v2