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

[red-hat-konflux]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v4 → v6

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

• Fix tag handling: preserve annotations and explicit fetch-tags by @​ericsciple in #​2356

v5

Compare Source

• Port v6 cleanup to v5 by @​ericsciple in #​2301

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Documentation

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates the GitHub Actions workflow to use the latest major version of actions/checkout (v6) for the Node.js CI job, with no other workflow logic changes.

File-Level Changes

Change	Details	Files
Bump actions/checkout from v4 to v6 in the Node.js CI workflow.	Update the checkout step in the Node.js workflow job to reference actions/checkout@v6 instead of v4 Keep all other workflow steps, configuration, and matrix settings unchanged	.github/workflows/node.js.yml

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