Failed to install apps when using Carthage and Xcode12.5

[soranoba]

When we build applications depending on Bolts-ObjC using Carthage and following commands, the built application failed to install on iOS 14.6.

carthage build --platform iOS --use-xcframeworks Bolts-ObjC

The reason for the installation failure is the same as in the following link.

code signature version is no longer supported

https://developer.apple.com/forums/thread/679182

I don't understand if this is a Carthage issue or a Bolts issue.
However, I found a workaround that removes the Scheme for StaticLib in Bolts.

Is there any other solution?
Thanks.

Versions

Bolts-Objc: 1.9.1
Carthage: 0.38.0

[soranoba]

ref Carthage/Carthage#3208