Update MLJ model registry

[ablaom]

This is just an update of existing metadata. No new models have been added.

• Test locally with MLJ (with integration tests turned on)

Testing of MLJ Model Registry itself is still being suppressed; see #599.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.77%. Comparing base (5c1edbf) to head (faf26df).
⚠️ Report is 2 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #609   +/-   ##
=======================================
  Coverage   78.77%   78.77%           
=======================================
  Files           8        8           
  Lines         490      490           
=======================================
  Hits          386      386           
  Misses        104      104           

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