Support for .net 4.8.0 - the last supported .net version for Windows7

[BlackZork]

Hi,

.net 4.8.0 is the latest version that runs on Windows7.

Removing/updating it to 4.8.1 causes installer of .net applications that are build for 4.8.0 to break on this system.

I think 4.8.0 should be still supported. Eventually You can leave Dependency_AddDotNet48 for 4.8.1 and higher and allow to choose 4.8.0 explicitly.