py: looks like we need --no-sdist for publish after all

Author: djc

.github/workflows/publish.yml

@@ -31,6 +31,7 @@ jobs:
         with:
           command: publish
           args: -m instant-distance-py/Cargo.toml
+                --no-sdist
                 --username __token__
                 --password ${{ secrets.PYPI_TOKEN }}
                 --interpreter python${{ matrix.python }}