chore(deps): update actions/checkout action to v7

[renovate-rancher]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v6.0.2 → v7.0.1

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Release Notes

actions/checkout (actions/checkout)

v7.0.1

Compare Source

• Skip running unsafe pr check if input is default by @​aiqiaoy in #​2518
• Trim only ascii whitespace for branch by @​aiqiaoy in #​2521
• Escape values passed to --unset by @​aiqiaoy in #​2530
• Various dependency updates

v7.0.0

Compare Source

• Block checking out fork PR for pull_request_target and workflow_run by @​aiqiaoy in #​2454
• Various dependency updates

v6.1.0

Compare Source

What's Changed

• [BREAKING] backport allow-unsafe-pr-checkout to v6 by @​aiqiaoy in #​2500
• backport fixes to releases-v6 by @​aiqiaoy in #​2527

https://github.blog/changelog/2026-06-18-safer-pull_request_target-defaults-for-github-actions-checkout/ for more details about this breaking change

Full Changelog: actions/checkout@v6.0.3...v6.1.0

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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