Update HTTPS test endpoint.

[davidlehn]

Update HTTPS test endpoint from dead service to to api.github.com. May hit rate limits during testing.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.09%. Comparing base (a839812) to head (29a43ff).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #47   +/-   ##
=======================================
  Coverage   94.09%   94.09%           
=======================================
  Files           4        4           
  Lines         237      237           
=======================================
  Hits          223      223           
  Misses         14       14           

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