ACCESS-ESM1.5 Further Test Fixes

[CodeGat]

After testing the metadata.yaml tests on an actual ESM1.5 configuration, it was found that more expected fields were actually incorrect.

In this PR:

• Change 'ocnBgchm' to 'ocnBgchem'
• Change 'keyword' to 'keywords'
• Update version of model-config-tests to 0.0.5

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.48%. Comparing base (b252873) to head (8f2fb04).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #45   +/-   ##
=======================================
  Coverage   73.48%   73.48%           
=======================================
  Files          15       15           
  Lines         724      724           
=======================================
  Hits          532      532           
  Misses        192      192           

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[aidanheerdegen]

LGTM