[Others] modify flash_mask version

[BingooYang]

Motivation

升级flahsmask版本

Modifications

no

Usage or Command

no

Accuracy Tests

no

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
  • You can add new tags based on the PR content, but the semantics must be clear.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[paddle-bot]

Thanks for your contribution!

[PaddlePaddle-bot]

🤖 AI Code Review | 2026-04-15

📋 Review 摘要

PR 概述：升级 flash_mask 依赖版本（4.0.post20260128 → 4.0.0+g4c84f74）

变更范围：requirements.txt

影响面 Tag：[Others]

📝 PR 规范检查

检查项	状态	说明
标题 Tag	✅	包含有效的 [Others] Tag
Motivation	⚠️	有错别字 "flahsmask" 应为 "flash_mask"
Modifications	⚠️	填写 "no"，但实际修改了依赖版本

Motivation 建议修改（可直接复制）：

## Motivation

升级 flash_mask 版本到 4.0.0+g4c84f74

Modifications 建议修改（可直接复制）：

## Modifications

- 升级 flash_mask 依赖版本：4.0.post20260128 → 4.0.0+g4c84f74
- 更新依赖下载源 URL 到新的 BOS 地址

问题

级别	文件	概述
🟡 建议	requirements.txt:50	PR 描述质量可提升

总体评价

依赖升级变更范围明确，版本保持 4.0 主版本兼容，API 接口无变化。建议完善 PR 描述的准确性，在 Checklist 中补充单元测试验证说明。

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (develop@9c23e61). Learn more about missing BASE report.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #7413   +/-   ##
==========================================
  Coverage           ?   73.49%           
==========================================
  Files              ?      383           
  Lines              ?    53637           
  Branches           ?     8419           
==========================================
  Hits               ?    39423           
  Misses             ?    11535           
  Partials           ?     2679           

Flag	Coverage Δ
GPU	73.49% <ø> (?)

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[zoooo0820]

LGTM