fixed git version

Author: Petr Sramek

.github/workflows/dotnet.yml

@@ -31,7 +31,7 @@ env:
   dotnet-sdk-version: '9.x'
   build-configuration: 'Release'
   build-platform: 'AnyCPU'
-  git-version: '6.x'
+  git-version: '6.0.x'
 
 jobs:      
   versioning: