chore: update Microsoft.Graph.Core to 4.0.1

Agent-Logs-Url: https://github.com/microsoftgraph/msgraph-sdk-powershell/sessions/778c7fc5-55c1-4566-a2ef-94a8df51abe6

Co-authored-by: gavinbarron <7122716+gavinbarron@users.noreply.github.com>

Author: Copilot

src/Authentication/Authentication.Core/Microsoft.Graph.Authentication.Core.csproj

@@ -21,7 +21,7 @@
     <!-- Explicitly reference Microsoft.Identity.Client to ensure form_post support -->
     <PackageReference Include="Microsoft.Identity.Client" Version="4.82.1" />
     <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="10.0.3" />
-    <PackageReference Include="Microsoft.Graph.Core" Version="3.2.5" />
+    <PackageReference Include="Microsoft.Graph.Core" Version="4.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="System.Text.Json" Version="10.0.3" />
   </ItemGroup>