Build Cache for Xcode v0.21.0

[system]

What’s Changed

• Bump the Bitrise Build Cache CLI to v3.7.0. No Xcode-specific behavior changes since v3.6.9; picks up the Gradle-plugin bumps and shared repo-URL resolution.

Release 0.21.0 · bitrise-steplib/bitrise-step-activate-build-cache-for-xcode