ci(.github/workflows): update 'actions/checkout' to v5 and 'actions/setup-node' to v6

[sukvvon]

Description

Related Issue: Fixes # (issue_number)

Changes

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have performed a self-review of my own code.
• My code is commented, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.

Further Comments

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7fbb8e5

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[vercel]

@sukvvon is attempting to deploy a commit to the Toss Team on Vercel.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.85%. Comparing base (6a96688) to head (7fbb8e5).

Additional details and impacted files

@@ Coverage Diff @@ ## main #208 +/- ## ======================================= Coverage 99.85% 99.85% ======================================= Files 15 15 Lines 1340 1340 Branches 262 262 ======================================= Hits 1338 1338 Misses 2 2 

Components	Coverage Δ
overlay-kit	99.85% <ø> (ø)

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