chore(deps): update actions/checkout action to v6.0.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	patch	v6.0.2 → v6.0.3

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Release Notes

actions/checkout (actions/checkout)

v6.0.3

Compare Source

• Fix checkout init for SHA-256 repositories by @​yaananth in #​2439
• fix: expand merge commit SHA regex and add SHA-256 test cases by @​yaananth in #​2414

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[syarihu]

Dependency Update Review

Summary

• Overall impact: Low
• Merge verdict: Safe to merge

Dependency changes

actions/checkout (v6.0.2 -> v6.0.3)

• Impact: Low
• Key changes:
  • Fixed: Expanded merge commit SHA regex and added SHA-256 test cases
  • Fixed: Checkout initialization for SHA-256 repositories
• Breaking changes: None
• Affected code:
  • .github/workflows/build-and-test.yml
  • .github/workflows/publish.yml
• Required action: None
• Release notes: https://github.com/actions/checkout/releases/tag/v6.0.3

Overall assessment

This PR updates actions/checkout from v6.0.2 to v6.0.3, which is a patch release containing only bug fixes. The changes focus on improving SHA handling (expanding the merge commit SHA regex and fixing SHA-256 repository checkout initialization). There are no breaking changes and no API surface changes that would affect this project's workflows. CI passes successfully. This PR is safe to merge.

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[syarihu]

Closing this PR since actions/checkout has already been updated to v7, making this v6 update unnecessary.

• refs: chore(deps): update actions/checkout action to v7 #71