chore: update ACE-Step-DAW submodule to latest HEAD + add nightly auto-update workflow#5

lmangani merged 3 commits intomainaudiohacking/acestep-cpp-api:mainfrom

copilot/update-ace-step-daw-submoduleaudiohacking/acestep-cpp-api:copilot/update-ace-step-daw-submoduleCopy head branch name to clipboard