Vcv rack sdk 2.4.0

[ohmtech-rdi]

This PR updates the vcv-rack-sdk submodule to version 2.4.0 since this version introduces a breaking change in the way plug-ins are loaded, and in particular their path. It also now supports the ARM64 architecture, and fixes a bug in the action system where the Windows binary was not installed.

• Fixes Wrong plugin path on windows (plugins-win-x64) #619
• Fixes Could not load plugin plugin.dylib (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64')) #627

Todo

• Check on macOS x86_64
• Check on macOS arm64

[ohmtech-rdi]

That doesn't work on M1 yet, because code signing is mandatory with M1.
We need to:

• Add ad-hoc code signing support in Xcode,
• Add ad-hoc code signing support to erbb build simulator.

Unfortunately we can't test automatically on CI using GitHub and their macos-13-xlarge which runs on M1, as those runners are not yet available for public projects.