Add Service Tree ID for .NET Libraries

[ericstj]

This uses the .NET Libraries Service Tree ID - https://microsoftservicetree.com/services/7a9b52f6-7805-416c-9390-343168c0cdb3, @artl93 - can you double check?

[artl93]

lgtm

[ericstj]

Failures match known issues, and build failures are just the result of test failure.

[artl93]

/backport to release/9.0

[github-actions[bot]]

Started backporting to release/9.0: https://github.com/dotnet/machinelearning/actions/runs/11132549180

[github-actions[bot]]

@artl93 an error occurred while backporting to release/9.0, please check the run log for details!

Error: @artl93 is not a repo collaborator, backporting is not allowed. If you're a collaborator please make sure your dotnet team membership visibility is set to Public on https://github.com/orgs/dotnet/people?query=artl93

[artl93]

/backport to release/8.0-staging

[github-actions[bot]]

Started backporting to release/8.0-staging: https://github.com/dotnet/machinelearning/actions/runs/11132554085

[github-actions[bot]]

@artl93 an error occurred while backporting to release/8.0-staging, please check the run log for details!

Error: @artl93 is not a repo collaborator, backporting is not allowed. If you're a collaborator please make sure your dotnet team membership visibility is set to Public on https://github.com/orgs/dotnet/people?query=artl93

[github-actions[bot]]

Started backporting to release/8.0-staging: https://github.com/dotnet/machinelearning/actions/runs/11132554085

[github-actions[bot]]

@artl93 an error occurred while backporting to release/8.0-staging, please check the run log for details!

Error: The specified backport target branch release/8.0-staging wasn't found in the repo.