Lower C# WinML target framework

Align the C# SDK WinML package and test project target frameworks with the WinML GA minimum Windows version.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: bmehta001

sdk/cs/src/Microsoft.AI.Foundry.Local.csproj

@@ -43,9 +43,9 @@
   -->
   <PropertyGroup Condition="'$(UseWinML)' == 'true'">
     <!-- WinML does not support netstandard2.0, so we only target net8.0 for the WinML build. -->
-    <TargetFrameworks>net8.0-windows10.0.26100.0</TargetFrameworks>
+    <TargetFrameworks>net8.0-windows10.0.18362.0</TargetFrameworks>
     <RuntimeIdentifiers>win-x64;win-arm64</RuntimeIdentifiers>
-    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <TargetPlatformMinVersion>10.0.18362.0</TargetPlatformMinVersion>
 
     <IsAotCompatible>true</IsAotCompatible>
     <DefineConstants>$(DefineConstants);IS_WINML</DefineConstants>

sdk/cs/test/FoundryLocal.Tests/Microsoft.AI.Foundry.Local.Tests.csproj

@@ -24,8 +24,8 @@
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(UseWinML)'=='true'">
-    <TargetFrameworks>net8.0-windows10.0.26100.0;</TargetFrameworks>
-    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <TargetFrameworks>net8.0-windows10.0.18362.0;</TargetFrameworks>
+    <TargetPlatformMinVersion>10.0.18362.0</TargetPlatformMinVersion>
     <WindowsPackageType>None</WindowsPackageType>
     <RuntimeIdentifier>$(NETCoreSdkRuntimeIdentifier)</RuntimeIdentifier>
   </PropertyGroup>