Update actions/checkout action to v7

[renovate]

This PR contains the following updates:

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

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Release Notes

actions/checkout (actions/checkout)

v7.0.0

Compare Source

• Block checking out fork PR for pull_request_target and workflow_run by @​aiqiaoy in #​2454
• Bump actions/publish-immutable-action from 0.0.3 to 0.0.4 in the minor-actions-dependencies group across 1 directory by @​dependabot[bot] in #​2458
• Bump flatted from 3.3.1 to 3.4.2 by @​dependabot[bot] in #​2460
• Bump js-yaml from 4.1.0 to 4.2.0 by @​dependabot[bot] in #​2461
• Bump @​actions/core and @​actions/tool-cache and Remove uuid by @​dependabot[bot] in #​2459
• upgrade module to esm and update dependencies by @​aiqiaoy in #​2463
• Bump the minor-npm-dependencies group across 1 directory with 3 updates by @​dependabot[bot] in #​2462

v7

Compare Source

• Block checking out fork PR for pull_request_target and workflow_run by @​aiqiaoy in #​2454
• Bump actions/publish-immutable-action from 0.0.3 to 0.0.4 in the minor-actions-dependencies group across 1 directory by @​dependabot[bot] in #​2458
• Bump flatted from 3.3.1 to 3.4.2 by @​dependabot[bot] in #​2460
• Bump js-yaml from 4.1.0 to 4.2.0 by @​dependabot[bot] in #​2461
• Bump @​actions/core and @​actions/tool-cache and Remove uuid by @​dependabot[bot] in #​2459
• upgrade module to esm and update dependencies by @​aiqiaoy in #​2463
• Bump the minor-npm-dependencies group across 1 directory with 3 updates by @​dependabot[bot] in #​2462

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Summary by cubic

Updated actions/checkout from v6 to v7 across CI, lint, and publish workflows. This brings security hardening (blocks fork PR checkout for pull_request_target/workflow_run) and upstream dependency updates.

^{Written for commit 475717a. Summary will update on new commits.}