[Bug] Distinguish difference between personal (classic) access tokens and fine-grained access tokens

[TrangOul]

Summary

There is a new type of token ("fine-grained"), and the older ones are called "classic", which this tutorial is not aware of.

How to reproduce

1. Complete Steps 1-2, so the current step is Step 3: Spin up an environment based on labels
2. Start completing Activity 1: Set up a personal access token (PAT)
3. Notice that there are two token types available: classic and fine-grained.
4. Notice that Activity 1 does not specify which one to use.

Please specify that classic token should be used or, better, update the tutorial to use the newer fine-grained tokens.

Additional context

The same as skills/publish-packages#42.

[nguyenalex836]

@TrangOul Thank you for opening this issue! ✨ I'll get this triaged for review