chore: update codeowners

[elycheea]

Now that Jeff and Paul are on the team, the Security package had its last v1 release, and more team members have gotten familiar with GitHub Actions and CI/CD, we’re able to remove some of the previous granularity. 🎉

What did you change?

Clean up codeowners!

How did you test and verify your work?

The file is valid. 😒

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[netlify]

✅ Deploy Preview for ibm-products-web-components ready!

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.18%. Comparing base (0a7b0fd) to head (ad13203).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6750   +/-   ##
=======================================
  Coverage   81.18%   81.18%           
=======================================
  Files         398      398           
  Lines       12955    12955           
  Branches     4282     4282           
=======================================
  Hits        10518    10518           
  Misses       2437     2437           

Components	Coverage Δ
ibm-products	∅ <ø> (∅)
ibm-products-web-components	∅ <ø> (∅)