Bump Microsoft.ML from 3.0.1 to 4.0.0 in /docs/machine-learning/tutorials/snippets/github-issue-classification/csharp in the dotnet group

Bump Microsoft.ML from 3.0.1 to 4.0.0 in /docs/machine-learning/tutorials/snippets/github-issue-classification/csharp in the dotnet group #3877