Update LineCounter sample versions (Azure#16128)

Author: pakrym

samples/linecounter/BlobProcessorHost.cs

@@ -8,7 +8,9 @@
 using System.Threading;
 using System.Threading.Tasks;
 using Azure.Messaging.EventHubs;
+using Azure.Messaging.EventHubs.Consumer;
 using Azure.Messaging.EventHubs.Processor;
+using Azure.Messaging.EventHubs.Producer;
 using Azure.Storage.Blobs;
 using Microsoft.Extensions.Azure;
 using Microsoft.Extensions.Configuration;
@@ -60,9 +62,7 @@ public async Task StartAsync(CancellationToken cancellationToken)
 
         private async Task ProcessEvent(ProcessEventArgs eventArgs)
         {
-            // Note there is a bug with the HasEvent property in Preview 6, so check if Data is not null as work around.
-            // https://github.com/Azure/azure-sdk-for-net/blob/master/sdk/eventhub/Azure.Messaging.EventHubs.Processor/samples/Sample08_EventProcessingHeartbeat.cs#L85
-            if (eventArgs.Data != null)
+            if (eventArgs.HasEvent)
             {
                 var totalCount = 0;
                 var cancellationToken = _cancellationTokenSource.Token;

samples/linecounter/Controllers/HomeController.cs

@@ -4,6 +4,7 @@
 using System.Text;
 using System.Threading.Tasks;
 using Azure.Messaging.EventHubs;
+using Azure.Messaging.EventHubs.Producer;
 using Azure.Storage.Blobs;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Azure;

samples/linecounter/LineCounter.csproj

@@ -4,10 +4,10 @@
     <UserSecretsId>67ca5d37-051b-4ab1-b013-c74a2d4edb76</UserSecretsId>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Azure.Messaging.EventHubs" Version="5.0.0-preview.6" />
-    <PackageReference Include="Azure.Messaging.EventHubs.Processor" Version="5.0.0-preview.6" />
-    <PackageReference Include="Azure.Storage.Blobs" Version="12.1.0" />
-    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.12.0" />
+    <PackageReference Include="Azure.Messaging.EventHubs" Version="5.2.0" />
+    <PackageReference Include="Azure.Messaging.EventHubs.Processor" Version="5.2.0" />
+    <PackageReference Include="Azure.Storage.Blobs" Version="12.6.0" />
+    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.15.0" />
     <PackageReference Include="Microsoft.Extensions.Azure" Version="1.0.0" />
   </ItemGroup>
   <ItemGroup>