[Functions] Fix Service Bus tests (#53702)

The Service Bus function tests look to have been
impacted by a recent bump to central dependencies
and require a direct reference to hoist the hosting
package version.

Author: jsquire

sdk/servicebus/Microsoft.Azure.WebJobs.Extensions.ServiceBus/src/Microsoft.Azure.WebJobs.Extensions.ServiceBus.csproj

@@ -18,6 +18,7 @@
     <PackageReference Include="Microsoft.Azure.WebJobs" />
     <PackageReference Include="Microsoft.Extensions.Azure" />
     <PackageReference Include="Azure.Messaging.ServiceBus" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" />
   </ItemGroup>
 
   <ItemGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">