update Microsoft.CodeAnalysis.CSharp, fixes #2266 (#2288)

Co-authored-by: dh <[email protected]>

Author: dennishermann

src/BenchmarkDotNet/BenchmarkDotNet.csproj

@@ -23,7 +23,7 @@
     <PackageReference Include="Microsoft.Diagnostics.Runtime" Version="2.2.332302" />
     <PackageReference Include="Perfolizer" Version="0.2.1" />
     <PackageReference Include="System.Management" Version="6.0.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.0.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.5.0" />
     <PackageReference Include="Microsoft.Diagnostics.Tracing.TraceEvent" Version="3.0.2" PrivateAssets="contentfiles;analyzers" />
     <PackageReference Include="Microsoft.DotNet.PlatformAbstractions" Version="3.1.6" />
   </ItemGroup>