[release/9.0] Update dependencies from dotnet/arcade

[dotnet-maestro[bot]]

This pull request updates the following dependencies

From https://github.com/dotnet/arcade

• Subscription: 0740c628-13e4-42c0-aab7-524515028697
• Build: 20251226.6 (295621)
• Date Produced: December 26, 2025 6:06:19 PM UTC
• Commit: ab5773ac30dce73227fa1dff6bf1a21eea67cbd0
• Branch: release/9.0

• Dependency Updates:
  • From 9.0.0-beta.25611.4 to 9.0.0-beta.25626.6
    • Microsoft.DotNet.Arcade.Sdk
    • Microsoft.DotNet.Build.Tasks.Templating
    • Microsoft.DotNet.RemoteExecutor
    • Microsoft.DotNet.XUnitExtensions
  • From 2.9.0-beta.25611.4 to 2.9.0-beta.25626.6
    • Microsoft.DotNet.XUnitConsoleRunner