DeepSpeed

827e1ca8 - Update version.txt after 0.12.6 release (#4850)

Update version.txt after 0.12.6 release (#4850) **Auto-generated PR to update version.txt after a DeepSpeed release** Released version - 0.12.6 Author - @mrwyattii Co-authored-by: mrwyattii <mrwyattii@users.noreply.github.com>