Fine-Tuning Scheduler Tutorial Update for Lightning/PyTorch 2.2.0

[speediedan]

Validated the Fine-Tuning Scheduler (FTS) tutorial for FTS/Lightning/PyTorch 2.2.0 (as of the final PyTorch RC and the recent 2.2.0 Lightning commit).

The only minor change in this PR is to remove references/links to tensorboard.dev since that service is shutting down on 2023.12.31.

Before submitting

• Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
• Did you make sure to update the docs?
• Did you write any new necessary tests?

What does this PR do?

Updates the Fine-Tuning Scheduler tutorial to prepare for 2.2.0 tutorial publishing.

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

Did you have fun?

Make sure you had fun coding 🙃

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70%. Comparing base (684b63b) to head (2efc41a).

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #298   +/-   ##
===================================
  Coverage    70%    70%           
===================================
  Files         2      2           
  Lines       435    435           
===================================
  Hits        303    303           
  Misses      132    132           

[speediedan]

Note only error is a link resolution error unrelated to this PR or tutorial.

[Borda]

@speediedan apology for the long delay but finally got the repo work again...

[speediedan]

@speediedan apology for the long delay but finally got the repo work again...

@Borda Thanks for streamlining the tutorials publishing process and fixing the outstanding issues! Love the simplification dropping the largely duplicative nbval part of the flow. Thanks again for all your work!