transformers

d39352d1 - Fix import of torch.utils.checkpoint (#27155)

Fix import of torch.utils.checkpoint (#27155) * Fix import * Apply suggestions from code review Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com> --------- Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com>