XcodeGenKit/resource_bundle_accessor.swift:44: Fatal error: unable to find bundle named XcodeGen_XcodeGenKit

XcodeGen: 2.39.0
Xcode: 15.2

When I run the latest xcodegen, I see this error:

```
⚙️  Generating plists...
⚙️  Generating project...
XcodeGenKit/resource_bundle_accessor.swift:44: Fatal error: unable to find bundle named XcodeGen_XcodeGenKit
[1]    3755 trace trap  xcodegen
```

There were no such errors in version 2.38.0.