Change schedule CI time
# What does this PR do?

**This PR changes the test CI to be scheduled 2 hours after the image build CI.**

Despite #22859 changed to use `accelerate@main`, the last DeepSpeed CI docker image still has `accelerate==0.18.0`. This is because that image build takes ~1h30m to finish, but the test CI is scheduled (only) 1 hour after the image build CI.

Although from the next run, the schedule test CI will start  to use `accelerate@main`, there will be a gap - i.e. it will use the `accelerate@main` **one day before** the current `main`.




_The documentation is not available anymore as the PR was closed or merged._<|||||>The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_22884). All of your documentation changes will be reflected on that endpoint.