toxgen: Add cohere

[sentrivana]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.31%. Comparing base (e6c8798) to head (0cc184f).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4304      +/-   ##
==========================================
+ Coverage   80.30%   80.31%   +0.01%     
==========================================
  Files         142      142              
  Lines       15919    15919              
  Branches     2722     2722              
==========================================
+ Hits        12783    12786       +3     
+ Misses       2262     2261       -1     
+ Partials      874      872       -2     

Files with missing lines	Coverage Δ
sentry_sdk/integrations/__init__.py	77.01% <ø> (ø)

... and 2 files with indirect coverage changes