Remove unused undici-types package

[fatadel]

This change was actually part of #6070, but it somehow slipped through.
This PR fixes that.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.77%. Comparing base (52f65d8) to head (25597eb).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6074      +/-   ##
==========================================
- Coverage   83.77%   83.77%   -0.01%     
==========================================
  Files         329      329              
  Lines       34559    34560       +1     
  Branches     9574     9576       +2     
==========================================
  Hits        28952    28952              
- Misses       5178     5179       +1     
  Partials      429      429              

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