Update .NET version from 7 to 8 and remove duplicate target frameworks

Co-authored-by: neuralsoothsayer <neuralsoothsayer@gmail.com>

Author: cursoragent

CodeChanges/UpdateDotNetVersion/UpdateNet7ToNet8.sh

@@ -1,3 +1,6 @@
 sed -i '' 's/net7/net8/g' .github/**/*.yml
 
 sed -i '' 's/net7/net8/g' ./**/*.csproj
+
+# Remove duplicate target frameworks (e.g., net8;net8 -> net8)
+sed -i '' 's/<TargetFrameworks>net8;net8<\/TargetFrameworks>/<TargetFrameworks>net8<\/TargetFrameworks>/g' ./**/*.csproj