Use the GitHub Actions parallel-steps feature (2026-06-25) to group
setup steps with no dependency between them: checkout, toolchains
(Bun/JDK/Xcode), the EAS CLI install and the disk-space cleanup now run
concurrently, and the Bun/Gradle cache restores overlap. On the iOS
jobs, Xcode/EAS setup previously ran after the ~2 min prebuild despite
not needing it.
Also in release.yml: queue successive release runs in order
(queue: max) instead of dropping the extra pending run, and fix the
expo-github-action pin comment (the pinned SHA is tag v9.0.0, not
main).
