Update BDN (#3120)

* Update BDN
* Update version of Microsoft.CodeAnalysis.CSharp in ILLink benchmarks because newer BDN
* Update ILLink packages.

Author: cincuranet

eng/Versions.props

@@ -14,9 +14,9 @@
     </MicrosoftNETSdkInternalPackageVersion>
     <MicrosoftWindowsDesktopAppRuntimewinx64PackageVersion>5.0.4</MicrosoftWindowsDesktopAppRuntimewinx64PackageVersion>
     <MicrosoftAspNetCoreAppRuntimewinx64PackageVersion>5.0.4</MicrosoftAspNetCoreAppRuntimewinx64PackageVersion>
-    <MicrosoftNetILLinkTasksVersion>7.0.100-1.22057.1</MicrosoftNetILLinkTasksVersion>
-    <MicrosoftNetILLinkPackageVersion>7.0.100-1.22057.1</MicrosoftNetILLinkPackageVersion>
-    <BenchmarkDotNetVersion>0.13.2.2052</BenchmarkDotNetVersion>
+    <MicrosoftNetILLinkTasksVersion>8.0.100-1.23067.1</MicrosoftNetILLinkTasksVersion>
+    <MicrosoftNetILLinkPackageVersion>8.0.100-1.23067.1</MicrosoftNetILLinkPackageVersion>
+    <BenchmarkDotNetVersion>0.13.7-nightly.20230717.35</BenchmarkDotNetVersion>
   </PropertyGroup>
   <!--Package names-->
   <PropertyGroup>

src/benchmarks/micro/MicroBenchmarks.Common.props

@@ -17,6 +17,13 @@
             <SystemVersion>7.0.0</SystemVersion>
         </PropertyGroup>
     </When>
+    <When Condition="'$(TargetFramework)' == 'net8.0'">
+        <PropertyGroup>
+            <LangVersion>preview</LangVersion>
+            <ExtensionsVersion>8.0.*-*</ExtensionsVersion>
+            <SystemVersion>8.0.*-*</SystemVersion>
+        </PropertyGroup>
+    </When>
     <Otherwise>
         <!-- when comparing against Full .NET Framework we are usually interested in CLR differences, so net462 belongs to this block -->
         <PropertyGroup>

src/benchmarks/real-world/ILLink/ILLinkBenchmarks.csproj

@@ -16,7 +16,7 @@
 	<ItemGroup>
 		<PackageReference Include="Microsoft.Net.ILLink" Version="$(MicrosoftNetILLinkPackageVersion)" />
 		<PackageReference Include="Microsoft.Net.ILLink.Tasks" Version="$(MicrosoftNetILLinkTasksVersion)" />
-		<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.8.0" />
+		<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.5.0" />
 		<PackageReference Include="Microsoft.Build" Version="17.3.1" />
 		<PackageReference Include="Microsoft.Build.Tasks.Core" Version="17.3.1" />
 		<PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.3.1" />