chore(workflows): upgrade checkout to v6

[imbajin]

Summary

• Upgrade all workflow uses of actions/checkout from v3/v4 to v6.
• Address GitHub Actions Node.js 20 deprecation warnings for checkout.
• Keep workflow triggers, matrices, Docker build/publish logic, and release behavior unchanged.

Validation

• rg --hidden -n "actions/checkout@v[0-9]+" .
• ruby -e 'require "yaml"; Dir[".github/workflows/*.{yml,yaml}"].sort.each { |f| YAML.load_file(f); puts "OK #{f}" }'
• git diff --check

Note: actionlint is not installed in the local environment, so validation used YAML parsing plus diff checks.

Summary by CodeRabbit

发布说明

• Chores
  • 升级CI/CD工作流中的源代码检出操作版本，以确保构建和发布流程使用最新的工具版本。

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: aa5c9eff-ae54-49c9-9f9c-658edabb0551

📥 Commits

Reviewing files that changed from the base of the PR and between 86d4718 and 97365ce.

📒 Files selected for processing (5)

• .github/workflows/_publish_image_reusable.yml
• .github/workflows/_publish_pd_store_server_reusable.yml
• .github/workflows/publish_computer_image.yml
• .github/workflows/publish_hugegraph_hubble.yml
• .github/workflows/validate-release.yml

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概览

在五个 GitHub Actions 工作流文件中统一升级 actions/checkout 版本至 v6，以保持依赖版本的一致性和获取最新的检出 action 功能与安全性更新。

变更

Actions Checkout 版本升级

层 / 文件	概述
可复用工作流中的 checkout 升级 .github/workflows/_publish_image_reusable.yml、.github/workflows/_publish_pd_store_server_reusable.yml	发布镜像可复用工作流（主发布流程）和 PD Store Server 可复用工作流（integration_precheck、publish_amd64、publish_arm64 矩阵构建）的 checkout action 版本从 v4 升级为 v6。
独立工作流中的 checkout 升级 .github/workflows/publish_computer_image.yml、.github/workflows/publish_hugegraph_hubble.yml、.github/workflows/validate-release.yml	计算机镜像发布工作流和版本验证工作流的 checkout action 从 v4 升级为 v6；Hubble 镜像发布工作流从 v3 升级为 v6。

相关的 PR

• hugegraph/actions#14：该 PR 引入了可复用发布工作流（如 _publish_image_reusable.yml），本 PR 现在更新了这些工作流中的 checkout action 版本。
• hugegraph/actions#16：该 PR 引入了 PD Store Server 可复用发布工作流（_publish_pd_store_server_reusable.yml），本 PR 现在对其中的 checkout action 进行版本升级。

建议的标签

enhancement, size:XXL

诗句

🐰 兔兔来整顿，版本六升级，
五个工作流齐步走，
Checkout v4 再见，v6 新功能欢迎，
自动化流程焕新，工程之道愈精妙！

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🎯 1 (Trivial) | ⏱️ ~3 分钟

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The pull request title clearly and concisely summarizes the main change: upgrading GitHub Actions checkout from v3/v4 to v6 across workflow files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cdx-upgrade-checkout-v6

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