Bump Anthropic SDK to 12.13.0 and Anthropic.Foundry to 0.5.0 (microsoft#5279)

- Update Anthropic from 12.11.0 to 12.13.0
- Update Anthropic.Foundry from 0.4.2 to 0.5.0
- Change Anthropic project from release candidate to preview
- Add new IBetaService members (Agents, Environments, Sessions, Vaults) to test mock

Author: rogerbarreto

dotnet/Directory.Packages.props

@@ -11,8 +11,8 @@
   </PropertyGroup>
   <ItemGroup>
     <!-- Aspire.* -->
-    <PackageVersion Include="Anthropic" Version="12.11.0" />
-    <PackageVersion Include="Anthropic.Foundry" Version="0.4.2" />
+    <PackageVersion Include="Anthropic" Version="12.13.0" />
+    <PackageVersion Include="Anthropic.Foundry" Version="0.5.0" />
     <PackageVersion Include="Aspire.Azure.AI.OpenAI" Version="13.0.0-preview.1.25560.3" />
     <PackageVersion Include="Aspire.Hosting.AppHost" Version="$(AspireAppHostSdkVersion)" />
     <PackageVersion Include="Aspire.Hosting.Azure.CognitiveServices" Version="$(AspireAppHostSdkVersion)" />

dotnet/src/Microsoft.Agents.AI.Anthropic/Microsoft.Agents.AI.Anthropic.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <IsReleaseCandidate>true</IsReleaseCandidate>
+    <IsReleaseCandidate>false</IsReleaseCandidate>
     <ImplicitUsings>enable</ImplicitUsings>
     <InjectSharedThrow>true</InjectSharedThrow>
   </PropertyGroup>

dotnet/tests/Microsoft.Agents.AI.Anthropic.UnitTests/Extensions/AnthropicBetaServiceExtensionsTests.cs

@@ -483,6 +483,14 @@ public TestBetaService(IAnthropicClient client)
 
             public IBetaMessageService Messages => new Mock<IBetaMessageService>().Object;
 
+            public global::Anthropic.Services.Beta.IAgentService Agents => throw new NotImplementedException();
+
+            public global::Anthropic.Services.Beta.IEnvironmentService Environments => throw new NotImplementedException();
+
+            public global::Anthropic.Services.Beta.ISessionService Sessions => throw new NotImplementedException();
+
+            public global::Anthropic.Services.Beta.IVaultService Vaults => throw new NotImplementedException();
+
             public IBetaService WithOptions(Func<ClientOptions, ClientOptions> modifier)
             {
                 throw new NotImplementedException();