Why does py2app create a folder path outside the app?

Question

I've used py2app with code that imports numpy. py2app creates the app, which runs properly, but only if the app resides in the same directory as a folder whose directory structure is opt/openblas/lib/libopenblas.0.dylib.

Is there a way to instruct py2app to bundle libopenblas.0.dylib with the app?

py2app for Mac on m1.