Unbreak deployment workflows

[hectorsector]

Summary

This PR fixes the course, although we will continue to see deprecation warnings from using the --sdk-auth flag. I'm not finding much evidence that support for this flag will actually be removed any time soon. See Azure/azure-cli#20743 and Azure/azure-cli#19949 (comment) for more information, but the tldr is that flag gives us what we need for this course and there's consensus that, although maybe eventually deprecated, this flag outputs the proper credentials which is preferable to the alternatives. The alternatives include breaking context to create some credentials in the Azure Portal or doing recommended OIDC auth but that requires breaking context even further.

There's a good argument to be made that this course can and probably should be rewritten and slimmed down significantly, but this PR gets it to a working state so users aren't struggling to follow a patchwork of documentation.

Changes

• Revert Removed deprecated flag --sdk-auth #78
• Updates instructions so that the user gives their CR_PAT write:packages permissions, required to update or publish a package.
• Updates user-created workflows to utilize CR_PAT, which wasn't used at all.
• Fix indentation and step numbering for most steps.

Closes: #84

Task list

• For workflow changes, I have verified the Actions workflows function as expected.
• For content changes, I have reviewed the style guide.

[heiskr]

I'll take a look later this week.

[heiskr]

Looks like some good clarifying :) TBH I haven't run the course with these changes and I'm not totally convinced this course is a good fit for Skills in general; but given the volume of feedback on it I think it makes sense to improve it where we can.