Upgrade SK (incl. Azure OpenAI throttling fix) and OllamaSharp (#874)

## Motivation and Context (Why the change? What's the scenario?)

Temporary workaround for Azure OpenAI SDK bug - service throttling
handled incorrectly and causing incorrect HTTP status error

See:
* Azure/azure-sdk-for-net#46109
* microsoft/semantic-kernel#8929
* https://github.com/microsoft/kernel-memory/issues/855

Author: dluc

Directory.Build.props

@@ -2,7 +2,7 @@
 <Project>
     <PropertyGroup>
         <!-- Central version prefix - applies to all nuget packages. -->
-        <Version>0.90.0</Version>
+        <Version>0.91.0</Version>
 
         <!-- C# lang version, https://learn.microsoft.com/dotnet/csharp/whats-new -->
         <LangVersion>12</LangVersion>

Directory.Packages.props

@@ -3,7 +3,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="AWSSDK.S3" Version="3.7.405.6" />
+    <PackageVersion Include="AWSSDK.S3" Version="3.7.405.7" />
     <PackageVersion Include="Azure.AI.ContentSafety" Version="1.0.0" />
     <PackageVersion Include="Azure.AI.FormRecognizer" Version="4.1.0" />
     <PackageVersion Include="Azure.Identity" Version="1.13.1" />
@@ -28,7 +28,7 @@
     <PackageVersion Include="MongoDB.Driver.GridFS" Version="2.30.0" />
     <PackageVersion Include="Moq" Version="4.20.72" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageVersion Include="OllamaSharp" Version="4.0.2" />
+    <PackageVersion Include="OllamaSharp" Version="4.0.3" />
     <PackageVersion Include="PdfPig" Version="0.1.9" />
     <PackageVersion Include="Polly.Core" Version="8.4.2" />
     <PackageVersion Include="RabbitMQ.Client" Version="6.8.1" />
@@ -56,10 +56,10 @@
   </ItemGroup>
   <!-- Semantic Kernel -->
   <ItemGroup>
-    <PackageVersion Include="Microsoft.SemanticKernel" Version="1.25.0" />
-    <PackageVersion Include="Microsoft.SemanticKernel.Abstractions" Version="1.25.0" />
-    <PackageVersion Include="Microsoft.SemanticKernel.Connectors.OpenAI" Version="1.25.0" />
-    <PackageVersion Include="Microsoft.SemanticKernel.Connectors.AzureOpenAI" Version="1.25.0" />
+    <PackageVersion Include="Microsoft.SemanticKernel" Version="1.26.0" />
+    <PackageVersion Include="Microsoft.SemanticKernel.Abstractions" Version="1.26.0" />
+    <PackageVersion Include="Microsoft.SemanticKernel.Connectors.OpenAI" Version="1.26.0" />
+    <PackageVersion Include="Microsoft.SemanticKernel.Connectors.AzureOpenAI" Version="1.26.0" />
   </ItemGroup>
   <!-- Documentation -->
   <ItemGroup>
@@ -103,7 +103,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageVersion>
-    <PackageVersion Include="Xunit.DependencyInjection" Version="9.5.0" />
+    <PackageVersion Include="Xunit.DependencyInjection" Version="9.6.0" />
     <PackageVersion Include="Xunit.DependencyInjection.Logging" Version="9.0.0" />
   </ItemGroup>
 </Project>

extensions/AzureOpenAI/Internals/AzureOpenAIClientBuilder.cs

@@ -55,3 +55,50 @@ internal static AzureOpenAIClient Build(
         }
     }
 }
+
+// Use only for local debugging - Usage:
+//
+// 1. Add this code in the builder above:
+//
+//      options.Transport = new HttpClientPipelineTransport(new HttpClient(new DebuggingHandler(new HttpClientHandler())));
+//
+// 2. Add these at the top:
+//
+//      using System.Threading;
+//      using System.Threading.Tasks;
+//
+// 3. Uncomment this class:
+//
+// #pragma warning disable CA1303
+// internal class DebuggingHandler : DelegatingHandler
+// {
+//     public DebuggingHandler(HttpMessageHandler innerHandler) : base(innerHandler)
+//     {
+//     }
+//
+//     protected override async Task<HttpResponseMessage> SendAsync(
+//         HttpRequestMessage request, CancellationToken cancellationToken)
+//     {
+//         // Log request URI
+//         Console.WriteLine("#### Request URI: " + request.RequestUri);
+//
+//         // Log request headers
+//         Console.WriteLine("#### Request Headers:");
+//         foreach (var header in request.Headers)
+//         {
+//             Console.WriteLine($"#### {header.Key}: {string.Join(", ", header.Value)}");
+//         }
+//
+//         // Send the request to the inner handler
+//         var response = await base.SendAsync(request, cancellationToken).ConfigureAwait(false);
+//
+//         // Optionally, log response headers here
+//         Console.WriteLine("#### Response Headers:");
+//         foreach (var header in response.Headers)
+//         {
+//             Console.WriteLine($"#### {header.Key}: {string.Join(", ", header.Value)}");
+//         }
+//
+//         return response;
+//     }
+// }

extensions/OpenAI/OpenAI/OpenAITextGenerator.cs

@@ -142,6 +142,14 @@ public async IAsyncEnumerable<string> GenerateTextAsync(
         IAsyncEnumerable<StreamingTextContent> result = this._client.GetStreamingTextContentsAsync(prompt, skOptions, cancellationToken: cancellationToken);
         await foreach (StreamingTextContent x in result)
         {
+            // TODO: try catch
+            // if (x.Metadata?["Usage"] is not null)
+            // {
+            //     var usage = x.Metadata["Usage"] as ChatTokenUsage;
+            //     this._log.LogTrace("Usage report: input tokens {0}, output tokens {1}, output reasoning tokens {2}",
+            //         usage?.InputTokenCount, usage?.OutputTokenCount, usage?.OutputTokenDetails.ReasoningTokenCount);
+            // }
+
             if (x.Text == null) { continue; }
 
             yield return x.Text;