add pycurl

[Tianhao-Gu]

noticed a recommendation msg.

9/12/2024 1:22:03 PM[D 2024-09-12 18:22:03.196 JupyterHub app:3267]�(B Could not load pycurl: No module named 'pycurl'
9/12/2024 1:22:03 PM    pycurl is recommended if you have a large number of users.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.48%. Comparing base (77e1718) to head (485af28).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #87   +/-   ##
=======================================
  Coverage   72.48%   72.48%           
=======================================
  Files           5        5           
  Lines         229      229           
=======================================
  Hits          166      166           
  Misses         63       63           

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