Bump MassTransit from 8.3.0 to 8.3.1 in /src (#219)

src/Directory.Packages.props

@@ -5,7 +5,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="27.0.2" />
-    <PackageVersion Include="MassTransit" Version="8.3.0" />
+    <PackageVersion Include="MassTransit" Version="8.3.1" />
     <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.141" />