Update GitHub Actions to v6 (main) (major)

[renovate-rancher]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v5.0.0 -> v6.0.1
actions/checkout	action	major	v5 -> v6

---

Release Notes

actions/checkout (actions/checkout)

v6.0.1

Compare Source

What's Changed

• Update all references from v5 and v4 to v6 by @​ericsciple in #​2314
• Add worktree support for persist-credentials includeIf by @​ericsciple in #​2327
• Clarify v6 README by @​ericsciple in #​2328

Full Changelog: actions/checkout@v6...v6.0.1

v6.0.0

Compare Source

• Persist creds to a separate file by @​ericsciple in #​2286
• Update README to include Node.js 24 support details and requirements by @​salmanmkc in #​2248

v5.0.1

Compare Source

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

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 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 these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Renovate Bot.