Update dependency NServiceBus to 10.0.0-alpha.6

Author: dependencyupdates[bot]

src/NServiceBus.Extensions.Hosting/NServiceBus.Extensions.Hosting.csproj

@@ -12,7 +12,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.0-preview.6.25358.103" AutomaticVersionRange="false" />
-    <PackageReference Include="NServiceBus" Version="10.0.0-alpha.5" />
+    <PackageReference Include="NServiceBus" Version="10.0.0-alpha.6" />
     <PackageReference Include="Particular.Packaging" Version="4.5.0" PrivateAssets="All" />
   </ItemGroup>