Merge pull request #277 from microsoft/downgrade-semantic-kernel-abstractions

fix: Downgrade Microsoft.SemanticKernel.Abstractions to resolve image file upload issue

Author: Roopan-Microsoft

App/kernel-memory/Directory.Packages.props

@@ -66,7 +66,7 @@
   <!-- Semantic Kernel -->
   <ItemGroup>
     <PackageVersion Include="Microsoft.SemanticKernel" Version="1.15.1" />
-    <PackageVersion Include="Microsoft.SemanticKernel.Abstractions" Version="1.31.0" />
+    <PackageVersion Include="Microsoft.SemanticKernel.Abstractions" Version="1.15.1" />
     <PackageVersion Include="Microsoft.SemanticKernel.Connectors.OpenAI" Version="1.15.1" />
   </ItemGroup>
   <!-- Documentation -->