bump: rabbitmq client version to 6.8.1

Author: JoaquimInGit

src/providers/WorkflowCore.QueueProviders.RabbitMQ/WorkflowCore.QueueProviders.RabbitMQ.csproj

@@ -23,7 +23,7 @@
 
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
-    <PackageReference Include="RabbitMQ.Client" Version="4.1.3" />
+    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
   </ItemGroup>
 
 </Project>