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

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v5 → v6

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

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Configuration

📅 Schedule: (UTC)

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• Automerge
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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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[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: 8f939767-a7d9-4e15-a5af-50b058c2fca3

📥 Commits

Reviewing files that changed from the base of the PR and between e2f1adc and 1bc0e08.

📒 Files selected for processing (2)

• .github/workflows/build-docker.yml
• .github/workflows/build.yml

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📝 Walkthrough

Walkthrough

Updated GitHub Actions checkout step from version 5 to version 6 in two workflow files (build-docker.yml and build.yml). No functional changes to build processes or workflow logic.

Changes

Cohort / File(s)	Summary
GitHub Actions Dependency Updates .github/workflows/build-docker.yml, .github/workflows/build.yml	Bumped actions/checkout from v5 to v6 in both workflow files. No changes to workflow steps, build configuration, or control flow.

Estimated Code Review Effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A version bump hops into view,
From v5 to v6, fresh and new!
The checkout action takes a stride,
Two workflows dance side by side.
Simple changes, clean and bright,
Dependencies updated just right! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: updating the actions/checkout action from v5 to v6 across workflow files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ 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 renovate/actions-checkout-6.x

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