DeepSpeed

1d30b58c - Replace calls to `python setup.py sdist` with `python -m build --sdist` (#7069)

Replace calls to `python setup.py sdist` with `python -m build --sdist` (#7069) With future changes coming to pip/python/etc, we need to modify to no longer call `python setup.py ...` and replace it instead: https://packaging.python.org/en/latest/guides/modernize-setup-py-project/#should-setup-py-be-deleted  This means we need to install the build package which is added here as well. Additionally, we pass the `--sdist` flag to only build the sdist rather than the wheel as well here. --------- Signed-off-by: Logan Adams <loadams@microsoft.com>