Bump accelerate from 1.4.0 to 1.6.0

Bumps [accelerate](https://github.com/huggingface/accelerate) from 1.4.0 to 1.6.0.
- [Release notes](https://github.com/huggingface/accelerate/releases)
- [Commits](huggingface/accelerate@v1.4.0...v1.6.0)

---
updated-dependencies:
- dependency-name: accelerate
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]