Switch to our self-hosted previews for the hackathon

This gives us mem0 which isn't public yet.

Author: kzu

sample/Server/Server.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Agents.AI.Hosting.OpenAI" Version="1.0.0-alpha.251016.1" />
+    <PackageReference Include="Microsoft.Agents.AI.Hosting.OpenAI" Version="42.42.11-pre" />
     <PackageReference Include="ModelContextProtocol" Version="0.4.0-preview.3" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="ThisAssembly.Project" Version="2.1.2" PrivateAssets="all" />

src/Agents/Agents.csproj

@@ -23,10 +23,10 @@
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="10.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="10.0.0" />
 
-    <PackageReference Include="Microsoft.Agents.AI" Version="1.0.0-preview.251104.1" />
-    <PackageReference Include="Microsoft.Agents.AI.Hosting" Version="1.0.0-preview.251016.1" />
-    <PackageReference Include="Microsoft.Agents.AI.AzureAI" Version="1.0.0-preview.251104.1" />
-    <PackageReference Include="Microsoft.Agents.AI.OpenAI" Version="1.0.0-preview.251016.1" />
+    <PackageReference Include="Microsoft.Agents.AI" Version="42.42.11-pre" />
+    <PackageReference Include="Microsoft.Agents.AI.Hosting" Version="42.42.11-pre" />
+    <PackageReference Include="Microsoft.Agents.AI.AzureAI" Version="42.42.11-pre" />
+    <PackageReference Include="Microsoft.Agents.AI.OpenAI" Version="42.42.11-pre" />
     <PackageReference Include="ModelContextProtocol" Version="0.4.0-preview.3" />
     <PackageReference Include="PolySharp" Version="1.15.0" PrivateAssets="all" />
     <PackageReference Include="YamlDotNet" Version="16.3.0" />