fix: src/REstate.Engine.Connectors.AzureServiceBus/REstate.Engine.Con…

…nectors.AzureServiceBus.csproj to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DOTNET-MESSAGEPACK-8229907

src/REstate.Engine.Connectors.AzureServiceBus/REstate.Engine.Connectors.AzureServiceBus.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MessagePack" Version="1.9.3" />
+    <PackageReference Include="MessagePack" Version="2.5.187" />
     <PackageReference Include="Microsoft.Azure.ServiceBus" Version="1.0.0" />
   </ItemGroup>