chore Remove hard-coded Comet version from CI

[andygrove]

Which issue does this PR close?

Closes #1406

Rationale for this change

What changes are included in this PR?

How are these changes tested?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 39.32%. Comparing base (f09f8af) to head (065f228).
Report is 37 commits behind head on main.

Additional details and impacted files

@@              Coverage Diff              @@
##               main    #1408       +/-   ##
=============================================
- Coverage     56.12%   39.32%   -16.81%     
- Complexity      976     2081     +1105     
=============================================
  Files           119      265      +146     
  Lines         11743    61132    +49389     
  Branches       2251    12962    +10711     
=============================================
+ Hits           6591    24040    +17449     
- Misses         4012    32587    +28575     
- Partials       1140     4505     +3365     

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