[CI] Fix bnb quantization tests with accelerate>=1.2.0

[matthewdouglas]

What does this PR do?

Fixes test failures for bitsandbytes that appear after accelerate==1.2.0 was released.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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• Did you write any new necessary tests?

Who can review?

@SunMarc

[HuggingFaceDocBuilderDev]

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[SunMarc]

LGTM ! Thanks for fixing !