remove dependency on rustls-webpki

[tofay]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.82%. Comparing base (553b037) to head (770212d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #28   +/-   ##
=======================================
  Coverage   85.82%   85.82%           
=======================================
  Files          14       14           
  Lines        1277     1277           
=======================================
  Hits         1096     1096           
  Misses        181      181           

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