Download .NET 7 SDK

Author: JamesNK

build/get-dotnet.sh

@@ -36,5 +36,8 @@ $install_script_path -v 5.0.302 -i $dotnet_install_path
 # Install .NET 6 SDK to run 6.0 test targets
 $install_script_path -v 6.0.202 -i $dotnet_install_path
 
+# Install .NET 7 SDK to run 7.0 test targets
+$install_script_path -v 7.0.100 -i $dotnet_install_path
+
 # Install .NET version specified by global.json
 $install_script_path -v $sdk_version -i $dotnet_install_path