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

[SakuraPuare]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v3 -> v7
actions/checkout	action	major	v4 -> v7

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Release Notes

actions/checkout (actions/checkout)

v7

Compare Source

• Skip running unsafe pr check if input is default by @​aiqiaoy in https://github.com/actions/checkout/pull/2518
• Trim only ascii whitespace for branch by @​aiqiaoy in https://github.com/actions/checkout/pull/2521
• Escape values passed to --unset by @​aiqiaoy in https://github.com/actions/checkout/pull/2530
• Various dependency updates

v6

Compare Source

• Fix checkout init for SHA-256 repositories by @​yaananth in https://github.com/actions/checkout/pull/2439
• fix: expand merge commit SHA regex and add SHA-256 test cases by @​yaananth in https://github.com/actions/checkout/pull/2414

v5

Compare Source

• Port v6 cleanup to v5 by @​ericsciple in https://github.com/actions/checkout/pull/2301

v4

Compare Source

• Port v6 cleanup to v4 by @​ericsciple in https://github.com/actions/checkout/pull/2305

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[SakuraPuare]

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