Build Cache for Xcode v0.15.4

[system]

What’s Changed

• Bump bundled Bitrise Build Cache CLI to v3.1.3 (Gradle analytics plugin 2.7.6: CLI-resolved local-invocation username). Full changelog: Release v3.1.3 · bitrise-io/bitrise-build-cache-cli · GitHub

Release 0.15.4 · bitrise-steplib/bitrise-step-activate-build-cache-for-xcode