chore: Fix rollback workflow file

[mattcreaser]

• PR title and description conform to Pull Request guidelines.

Issue #, if available:

Description of changes:

• Fixes a couple of issues discovered with the rollback workflow

How did you test these changes?

• Ran the workflow in a fork and verified it behaved as desired

Documentation update required?

• No
• Yes (Please include a PR link for the documentation update)

General Checklist

• Added Unit Tests
• Added Integration Tests
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (15a4523) 42.67% compared to head (239c35c) 42.66%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2705      +/-   ##
==========================================
- Coverage   42.67%   42.66%   -0.02%     
==========================================
  Files         905      905              
  Lines       29026    29026              
  Branches     4131     4131              
==========================================
- Hits        12386    12383       -3     
- Misses      15291    15295       +4     
+ Partials     1349     1348       -1