chore: Bump vllm to 0.11.2, torch to 2.9, transformers to 4.57.1

[yfw]

What does this PR do ?

Updates vllm to 0.11.2, torch to 2.9, transformers to 4.57.1. Also updates Automodel to use main branch.

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[github-actions]

❌ Submodule Fast-Forward Check Failed

Check based on commit: 82b6f95 (PR #1563 from yifu/vllm0112_bump)

❌ Submodules that need attention:

Automodel: ❌ Commits have DIVERGED from a common ancestor
TARGET (main branch): https://github.com/NVIDIA-NeMo/Automodel/commits/a2db048383cd54b3fafc928df4c30bf7bbf7c430/
CURRENT (PR #1563 from yifu/vllm0112_bump): https://github.com/NVIDIA-NeMo/Automodel/commits/f9fc82c055e1cc69a68ff0bc7614aabe507a43ea/

Please ensure all submodule commits are fast-forwards of the main branch before merging.

[github-actions]

✅ Submodule Fast-Forward Check Results

Check based on commit: 39a9b03 (PR #1563 from yifu/vllm0112_bump)

✅ Submodules that are properly updated:

Automodel: ✅ PR branch is ahead of main branch (fast-forward)

All submodule changes look good! ✨

[github-actions]

✅ Submodule Fast-Forward Check Results

Check based on commit: fa2ccf4 (PR #1563 from yifu/vllm0112_bump)

✅ Submodules that are properly updated:

Automodel: ✅ PR branch is ahead of main branch (fast-forward)

All submodule changes look good! ✨

[github-actions]

✅ Submodule Fast-Forward Check Results

Check based on commit: baf37d6 (PR #1563 from yifu/vllm0112_bump)

✅ Submodules that are properly updated:

Automodel: ✅ PR branch is ahead of main branch (fast-forward)

All submodule changes look good! ✨