chore: bump SGLang version to 0.5.6

[sglang-bot]

Summary

This PR bumps the SGLang version to 0.5.6 across all relevant files.

Files Updated

• benchmark/deepseek_v3/README.md
• docker/Dockerfile
• docker/rocm.Dockerfile
• docs/get_started/install.md
• docs/platforms/amd_gpu.md
• docs/platforms/ascend_npu.md
• python/pyproject.toml
• python/pyproject_cpu.toml
• python/pyproject_other.toml
• python/pyproject_xpu.toml
• python/sglang/version.py

🤖 Generated with GitHub Actions

[gemini-code-assist]

Summary of Changes

Hello @sglang-bot, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request performs a routine version bump for the SGLang project, advancing it to version "0.5.6". The update is applied comprehensively across various project files, including documentation, Docker build arguments, and Python package metadata, to maintain consistency and reflect the latest release status.

Highlights

• SGLang Version Bump: The SGLang project version has been updated from "0.5.5.post3" to "0.5.6" across all relevant configuration files, documentation, and build scripts.
• Consistent Versioning: This change ensures that installation instructions, Dockerfiles, and Python project metadata consistently reflect the new "0.5.6" release.

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[Fridge003]

/tag-and-rerun-ci

[gemini-code-assist]

Code Review

This pull request bumps the SGLang version from 0.5.5.post3 to 0.5.6 across various configuration files, documentation, and source code. The changes appear to be generated by an automation script and are consistent with the goal of updating the version number. The updates in pyproject.toml files, Dockerfiles, and the main version file are correct. I have one suggestion for the documentation to improve reproducibility for users.

[Fridge003]

8-h200 nightly test
https://github.com/sgl-project/sglang/actions/runs/19873531261/job/56955190002

other nightly tests
https://github.com/sgl-project/sglang/actions/runs/19871926873/job/56949680491