Publish only ubuntu wheels for now

Author: mmghannam

.github/workflows/build_wheels.yml

@@ -49,7 +49,7 @@ jobs:
           path: dist/*.tar.gz
 
   upload_pypi:
-    needs: [build_wheels]
+    needs: [build_wheels, build_sdist]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/download-artifact@v3