Update Managed Files

[ChiaAutomation]

Note

Low Risk
Routine CI dependency tag bump with no application or security logic changes; only checkout action version references are updated.

Overview
Updates managed GitHub workflow files so every actions/checkout step uses actions/checkout@v7 instead of the pinned patch v7.0.1.

Affected workflows: commit signing checks, dependency review, and dependency Cursor review (including the main repo checkout and upstream dependency checkout). No step inputs or job logic change—only the action version reference.

^{Reviewed by Cursor Bugbot for commit d58bc78. Bugbot is set up for automated code reviews on this repo. Configure here.}