Possible to notarize a single dylib file?

My company develops an audio plugin that downloads a dylib file from our server in order to ensure that the plugin is always up-to-date. The dylib file is signed and hardened, and this process has worked correctly for years.

We've installed the OSX 12 Beta, and the software continues to work properly, except in GarageBand. GarageBand refuses to load the dylib, saying the file "cannot be opened because Apple cannot check it for malicious software."

This dylib file cannot be installed via a stapled package. Is there a mechanism by which we can staple an individual dylib file? We've tried adding the dylib to a .zip file and uploading it to the notarization service. The file is approved, but the staple tool apparently won't staple a single dylib file, expecting it instead to be part of a package.

Is there any way around this? Will GarageBand for OSX 12 be repaired? The plugin works correctly in Logic on OSX 12.

Thanks!