[Sync EN] build(deps): bump actions/checkout from 6 to 7 (#5632)

[github-actions]

Commit: https://github.com/php/doc-en/commit/0594bf2189fe2f6d963476462185aa606f69060c
PR: https://github.com/php/doc-en/pull/5632

Archivos ES a actualizar

• .github/workflows/integrate.yaml