chore: update dotnet sdk version in ci

Author: VShingala

codegens/csharp-httpclient/test/ci-install.sh

@@ -3,13 +3,13 @@ set -ev; # stop on error
 
 sudo apt-get update
 echo "Installing dependencies required for tests in codegens/csharp-httpclient"
-# Install latest .net6.0 sdk
+# Install latest .net8.0 sdk
 pushd ./codegens/csharp-httpclient &>/dev/null;
   wget -q https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
   sudo dpkg -i packages-microsoft-prod.deb
   sudo apt-get install apt-transport-https
   sudo apt-get update
-  sudo apt-get install dotnet-sdk-6.0
-  dotnet new console -o testProject -f net6.0
+  sudo apt-get install dotnet-sdk-8.0
+  dotnet new console -o testProject -f net8.0
   # no extra packages needed
 popd &>/dev/null;

codegens/csharp-restsharp/test/ci-install.sh

@@ -8,8 +8,8 @@ pushd ./codegens/csharp-restsharp &>/dev/null;
   sudo dpkg -i packages-microsoft-prod.deb
   sudo apt-get install apt-transport-https
   sudo apt-get update
-  sudo apt-get install dotnet-sdk-6.0
-  dotnet new console -o testProject -f net6.0
+  sudo apt-get install dotnet-sdk-8.0
+  dotnet new console -o testProject -f net8.0
   pushd ./testProject &>/dev/null;
   dotnet add package RestSharp --version 112.0.0
   popd &>/dev/null;