Update dotnet-svcutil.xmlserializer for 8.0 tfm. (#5375)

Author: imcarolwang

src/svcutilcore/files/dotnet-svcutil.xmlserializer.targets

@@ -60,7 +60,7 @@
     <Delete Condition="Exists('$(_SerializerPdbIntermediateFolder)') == 'true'" Files="$(_SerializerPdbIntermediateFolder)" ContinueOnError="true" />
     <Delete Condition="Exists('$(_SerializerCsIntermediateFolder)') == 'true'" Files="$(_SerializerCsIntermediateFolder)" ContinueOnError="true" />
     <Message Text="Running SvcUtil Serialization Tool" Importance="normal" />
-    <Exec Command="dotnet $(MSBuildThisFileDirectory)..\lib\net6.0\dotnet-svcutil.xmlserializer.dll $(IntermediateOutputPath)$(AssemblyName)$(TargetExt) --quiet --out:$(IntermediateOutputPath)$(_SerializationAssemblyName) --smreference:&quot;@(_ReferenceSMAssembly)&quot;" ContinueOnError="true" />
+    <Exec Command="dotnet $(MSBuildThisFileDirectory)..\lib\net8.0\dotnet-svcutil.xmlserializer.dll $(IntermediateOutputPath)$(AssemblyName)$(TargetExt) --quiet --out:$(IntermediateOutputPath)$(_SerializationAssemblyName) --smreference:&quot;@(_ReferenceSMAssembly)&quot;" ContinueOnError="true" />
     <Warning Condition="Exists('$(_SerializerCsIntermediateFolder)') != 'true'" Text="$(_SvcUtilWarningText)" />
     <Csc Condition="Exists('$(_SerializerCsIntermediateFolder)') == 'true'" ContinueOnError="true" OutputAssembly="$(_SerializerDllIntermediateFolder)" References="@(ReferencePath);@(IntermediateAssembly)" EmitDebugInformation="$(DebugSymbols)" Sources="$(_SerializerCsIntermediateFolder)" TargetType="Library" ToolExe="$(CscToolExe)" ToolPath="$(CscToolPath)" DisabledWarnings="$(_SerializationAssemblyDisabledWarnings)" />
     <Warning Condition="Exists('$(_SerializerDllIntermediateFolder)') != 'true' And Exists('$(_SerializerCsIntermediateFolder)') == 'true'" Text="$(_SvcUtilWarningText)" />

src/svcutilcore/tests/dotnet-svcutil.xmlserializer.IntegrationTests.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), certtest.props))\certtest.props" />
 
   <PropertyGroup>
@@ -15,7 +15,7 @@
     <XmlSerializerTestSource>..\..\System.Private.ServiceModel\tests\Scenarios\Contract\XmlSerializer\</XmlSerializerTestSource>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(TargetFramework)' == 'net6.0'">
+  <PropertyGroup Condition="'$(TargetFramework)' == 'net8.0'">
     <!-- We're building netcoreap, run on the test CLI
          Reuse the same runtimeconfig that the tests use. -->
     <GeneratorRuntimeConfig>$(ArtifactsBinDir)\dotnet-svcutil.xmlserializer\$(Configuration)\$(TargetFramework)\dotnet-svcutil.xmlserializer.runtimeconfig.json</GeneratorRuntimeConfig>