Update CODEOWNERS to Amplify UI team

[reesscot]

Description of changes

This PR updates the CodeOwners to Amplify UI team

Issue #, if available

Description of how you validated changes

Checklist

• [ ] PR description included
• [ ] yarn test passes
• [ ] Tests are [changed or added]
• [ ] Relevant documentation is changed or added (and PR referenced)

[codecov-commenter]

Codecov Report

Merging #227 (f770525) into main (cc18f8c) will not change coverage. The diff coverage is n/a.

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@@           Coverage Diff           @@
##             main     #227   +/-   ##
=======================================
  Coverage   43.99%   43.99%           
=======================================
  Files          16       16           
  Lines        1273     1273           
  Branches      172      172           
=======================================
  Hits          560      560           
  Misses        713      713           

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[github-actions[bot]]

:tada: This PR is included in version 3.0.0-geo.1 :tada:

The release is available on:

• npm package (@geo dist-tag)
• GitHub release

Your semantic-release bot :package::rocket:

[github-actions[bot]]

:tada: This PR is included in version 3.0.0-unstable.10 :tada:

The release is available on:

• npm package (@unstable dist-tag)
• GitHub release

Your semantic-release bot :package::rocket:

[github-actions[bot]]

:tada: This PR is included in version 4.0.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: