chore: add test to ensure all supported ontologies are supported by COG API

[nayib-jose-gloria]

Reason for Change

• noticed during experimental validator work that after adding new ontologies to the builder, there was no integration test that ensured the corresponding dataclass in the COG API had the new ontologies added. If we miss doing so, we won't be able to query the new assets

Changes

• add test for Ontology entity class

Note to Reviewers

• I'm also open to the idea of getting deprecating this enum altogether now that we anticipate it'll change more often to avoid so much redundant work to make additions. But since the API and asset builder are technically separate entities it probably does make sense to maintain this list in both.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.02%. Comparing base (2e1a834) to head (21d513b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #236      +/-   ##
==========================================
+ Coverage   88.95%   89.02%   +0.07%     
==========================================
  Files          18       19       +1     
  Lines        1267     1276       +9     
  Branches      109      111       +2     
==========================================
+ Hits         1127     1136       +9     
  Misses        122      122              
  Partials       18       18              

Flag	Coverage Δ
unittests	89.02% <100.00%> (+0.07%)	⬆️

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