DeepSpeed

016b7962 - Update version.txt after 0.12.1 release (#4615)

Update version.txt after 0.12.1 release (#4615) **Auto-generated PR to update version.txt after a DeepSpeed release** Released version - 0.12.1 Author - @jeffra Co-authored-by: jeffra <jeffra@users.noreply.github.com>