Use explicit torch version in deepspeed CI
# What does this PR do?

Use explicit torch version in DeepSpeed CI docker file, as we do in

https://github.com/huggingface/transformers/blob/d49c43e93fedc1ff7d58a3617fc8a3532af054ba/docker/transformers-all-latest-gpu/Dockerfile#L12
_The documentation is not available anymore as the PR was closed or merged._<|||||>OK for me to use 1.12. We might see more test failures (for scheduled daily CI). Current CircleCI pings 1.11 to have green CI.