fix(auth): Add userAttributes to confirmSignIn call

[tylerjroach]

• PR title and description conform to Pull Request guidelines.

Issue #, if available:
#2622

Description of changes:

How did you test these changes?
(Please add a line here how the changes were tested)

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

Merging #2640 (a0ac3d1) into main (644be2d) will increase coverage by 0.02%.
The diff coverage is 44.00%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2640      +/-   ##
==========================================
+ Coverage   41.78%   41.80%   +0.02%     
==========================================
  Files         902      902              
  Lines       28976    28996      +20     
  Branches     4106     4107       +1     
==========================================
+ Hits        12107    12122      +15     
- Misses      15543    15544       +1     
- Partials     1326     1330       +4