chore(deps): update actions/checkout to v7

[MikeMcC399]

Situation

Documentation, examples and workflows currently use actions/checkout@v6.

actions/checkout@v7, published on June 18, 2025 has increased security protection.

Change

Update all README documentation and .github/workflows:

From	To
actions/checkout@v6	actions/checkout@v7

Note that this update has to be done manually, as Renovate only updates workflows, not the associated documentation.

---

Note

Low Risk
Mechanical dependency bump on the standard checkout action in CI and documentation only; no application or Cypress action code changes.

Overview
Bumps the GitHub Actions checkout step from actions/checkout@v6 to actions/checkout@v7 everywhere this repo documents and exercises CI.

Every checkout step under .github/workflows/ (main build, dist/markdown checks, and all example-* Cypress workflows) now uses v7. README.md sample workflows are updated the same way so copy-paste examples match what the repo actually runs.

No Cypress action logic, test code, or runtime dependencies change—only the checkout action version in workflows and docs.

^{Reviewed by Cursor Bugbot for commit f60b3c9. Bugbot is set up for automated code reviews on this repo. Configure here.}

[cypress-app-bot]

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