fix Outlines version error

[shuaills]

Motivation

Upgrade Outlines to lateset version, as following #2505 and #2550.

Modifications

• Update Outlines dependency version and related adaptations

Checklist

• Format your code according to the Contributor Guide.
• Add unit tests as outlined in the Contributor Guide.
• Update documentation as needed, including docstrings or example tutorials.

[zhyncs]

I did not upgrade directly to v0.6.4.post1 and kept vllm 0.6.3.post1 because some major clients still need to use torch 2.4, making it inconvenient to upgrade, so I made it compatible. Moreover, we only used the quantization part of vllm, and the upgrade to vllm 0.6.5 does not provide additional benefits for sglang.

[zhyncs]

vllm 0.6.3.post1 uses torch 2.4
vllm 0.6.4.post1 uses torch 2.5
vllm 0.6.5 uses torch 2.5

[shuaills]

Thanks for the clarification! Sticking with vllm 0.6.3.post1 for torch 2.4 compatibility makes sense. I'll close the PR.

[shuaills]

After checking the dependencies, it seems better to stick with the current setup for now. sglang depends on torch 2.4, but newer vllm versions need torch 2.5, which makes things a bit tricky. Closing the PR, but details are tracked in the related issue