fix: Fixed pydantic required version in Dockerfiles to make it compatible with DeepSpeed

[Sai-Suraj-27]

What does this PR do?

The DeepSpeed module now requires pydantic vesrion >=2.0.0.
https://github.com/microsoft/DeepSpeed/blob/e2654bfd1ab431bde088a7501ed01b503daa5ab1/requirements/requirements.txt#L6

This is why the following docker builds are failing
https://github.com/huggingface/transformers/actions/runs/10534132397/job/29191315906#
https://github.com/huggingface/transformers/actions/runs/10534132397/job/29191315906

Fixes # (issue)

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Who can review?

@ydshieh @amyeroberts

[ydshieh]

Great, thank you!

@muellerzr We will have to check if pydantic will cause some new failures afterwards. (And to check if the docker images could be even build - but I can check this part)

[muellerzr]

Joy okay, sounds good. Thanks for the flag.

[HuggingFaceDocBuilderDev]

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