[Misc] pin transformers to 4.57.3

[Potabk]

Purpose

This patch purpose pin transformers version to latest 4.57.3, for the release 4.57.2, there was a hidden bug when loading models with local_files_only=True, see huggingface/transformers#42389

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.
• (Optional) Release notes update. If your change is user facing, please update the release notes draft in the Google Doc.

[gemini-code-assist]

Code Review

This pull request updates the transformers dependency to version >= 4.57.3. As explained in the description, this is a necessary change to fix a bug in version 4.57.2 related to local_files_only=True. The change is correct and I approve it.

[DarkLight1337]

Our Docker images are built using the latest available version so that should be the case for most users already.

For those who install vLLM manually, I think that it should be up to the users to upgrade their vLLM version to resolve the issue. We should not force a minimum version unless it affects the coupling between vLLM and Transformers.

[Potabk]

looks reasonable