chore: bump v0.4.3.post1

[zhyncs]

Motivation

SGLang supports MTP (nextn) in the Triton backend, achieving a speed of 77 tokens per second, twice as fast as other OSS LLM engines.

#3582

Modifications

Checklist

• Format your code according to the Code Formatting with Pre-Commit.
• Add unit tests as outlined in the Running Unit Tests.
• Update documentation / docstrings / example tutorials as needed, according to Writing Documentation.
• Provide throughput / latency benchmark results and accuracy evaluation results as needed, according to Benchmark and Profiling and Accuracy Results.
• For reviewers: If you haven't made any contributions to this PR and are only assisting with merging the main branch, please remove yourself as a co-author when merging the PR.
• Please feel free to join our Slack channel at https://slack.sglang.ai to discuss your PR.

[zhyncs]

AMD docker release https://github.com/sgl-project/sglang/actions/runs/13372224053