ci: bump GitHub Actions versions in release workflow

[lonewolfyx]

Upgrade actions used in the release workflow to their latest major versions:

• actions/checkout v4 -> v7
• actions/setup-node v4 -> v6

Summary by CodeRabbit

• Chores
  • Updated release automation setup steps to newer versions.
  • Release workflow behavior and validation remain unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: ba8a9ac2-c62b-41bb-98ae-8467abc41829

📥 Commits

Reviewing files that changed from the base of the PR and between 134fe29 and 9319dad.

📒 Files selected for processing (1)

• .github/workflows/release.yml

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📝 Walkthrough

Walkthrough

The release workflow upgrades actions/checkout from v4 to v7 and actions/setup-node from v4 to v6, with surrounding release logic unchanged.

Changes

Release workflow

Layer / File(s)	Summary
Update release action versions .github/workflows/release.yml	The release job upgrades the checkout and Node setup actions while retaining the existing configuration.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 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 title clearly matches the main change: bumping GitHub Actions versions in the release workflow.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ci/bump-github-actions-versions

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