Update to GenHTTP version 2.8.3 (#5523)

Co-authored-by: nm-naegeli <[email protected]>

frameworks/CSharp/genhttp/Benchmarks/Benchmarks.csproj

@@ -18,8 +18,8 @@
   </PropertyGroup>
     
   <ItemGroup>
-    <PackageReference Include="GenHTTP.Core" Version="2.8.1" />
-    <PackageReference Include="GenHTTP.Modules.Webservices" Version="2.8.1" />
+    <PackageReference Include="GenHTTP.Core" Version="2.8.3" />
+    <PackageReference Include="GenHTTP.Modules.Webservices" Version="2.8.3" />
   </ItemGroup>
   
 </Project>