submit_review reached the deliver step but failed with "could not find
an editable version for 'IOS'". With skip_metadata + skip_screenshots,
deliver does not auto-create the "Prepare for Submission" entry on App
Store Connect, so submitting fails when the marketing version has not
been created yet.
Use Spaceship's ensure_version! to create or reuse the editable App
Store version for the build's marketing version, and pass app_version
to deliver so it targets the right entry.