(DO NOT MERGE) test shared-workflow changes

[jameslamb]

Description

Testing the changes in rapidsai/shared-workflows#182.

I added an exit 1 for the wheel tests. Ideally, we'll see the following:

• Python 3.11 wheel tests marked successful
• non-Python-3.11 wheel tests marked as failed
• merging blocked

Notes for Reviewers

I removed the DO NOT MERGE label so that Label Checker will pass, since we want to test that the pr-builder workflow is failing for exactly the reasons we expect it to, and no others.

But don't actually merge this.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[vyasr]

Closing, we now know that the current workflow filtering produces the expected behaviors for all matrix jobs.