DeepSpeed

0abf4dfd - Update version.txt after 0.12.3 release (#4673)

Update version.txt after 0.12.3 release (#4673) **Auto-generated PR to update version.txt after a DeepSpeed release** Released version - 0.12.3 Author - @lekurile Co-authored-by: lekurile <lekurile@users.noreply.github.com>