Notebook updates for new SMStudio (re:Invent 2023)

[athewsey]

Issue #, if available: #36, #37

Description of changes:

• [ ] (Just added deprecation note for now) ~Update optional autopilot folder for deep-dive on SageMaker AutoMLV2 APIs.~
• [X] Update XGBoost+AutoML lab
• [x] Update script mode walkthroughs
  • [x] SKLearn
  • [x] HuggingFace
  • [x] PyTorch
  • [x] TensorFlow
• [X] Update migration challenges
  • [X] SKLearn
    • [X] Solution (on chore/2024-solution)
  • [x] PyTorch
    • [X] Solution (on chore/2024-solution)
  • [x] TensorFlow
    • [X] Solution (on chore/2024-solution)
• [ ] (Deferred to a follow-up PR) ~Infra to pre-deploy new Studio JupyterLab space~

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