[CI] Upgrade deprecated actions/checkout and actions/setup-node to v4

[MeiSiristhebest]

🙋 SDK Version

Latest main

📌 Layout

Fixed layout & Free layout

💻 Environment

• Operation System: Ubuntu / GitHub Actions Runner
• Node.js: 18 / 20 LTS

📝 Description

The CI workflows (.github/workflows/ci.yml and .github/workflows/common-pr-checks.yml) are currently pinned to actions/checkout@v3 and actions/setup-node@v3.

Since GitHub Actions has deprecated Node 16 runners in favor of Node 20 for official actions, upgrading them to @v4 avoids runner deprecation warnings and ensures stable CI builds going forward.

I've tested the workflow changes and prepared a clean, minimal PR to address this.

[ktz03]

I'd like to take this. Plan: bump actions/checkout and actions/setup-node to v4 across CI workflows. PR shortly.

[ktz03]

Seeing #1159 already covers this. Stepping back — thanks!