Pin litellm version due to compromised later versions

[michelle-avery]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.65%. Comparing base (6a35811) to head (9fad812).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #97   +/-   ##
=======================================
  Coverage   56.65%   56.65%           
=======================================
  Files           9        9           
  Lines        1165     1165           
  Branches      182      182           
=======================================
  Hits          660      660           
  Misses        442      442           
  Partials       63       63           

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