Create Sharper Integration
Since your application has a different name from the name of the repository, you need to use the full URL: https://github.com/namehillsoftware/sharper-app-images/releases/download/1.1.0/Sharper_Integration-x86_64.AppImage
Also, it would be good to have the version in the AppImage filename:
Sharper_Integration-1.1.0-x86_64.AppImage
Sounds good, I'm not tied to the repo name (although it is a good one!), so I can also just rename it if that is better.
The build also says that glibc 2.32/2.34 is missing, I think this is likely due to some shortcoming in dotnet's AOT builds (the documentation says it supports Ubuntu 20.04, but this may be for more traditional dotnet builds), unless it's something on the appimage.github.io build side?