ACCESS-ESM1.5 mppnccombine MPI Test Fix

[CodeGat]

See https://github.com/ACCESS-NRI/access-esm1.5-configs/pull/44/checks?check_run_id=28688143378

We allow collate.mpi to be either true or false, rather than only true.

Since converting the .yaml file into a Python dict also converts the above to a bool, test that the resulting value is an instance of bool.

In this PR:

• Update the test
• Update the version of model-config-tests to 0.0.7

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 73.48%. Comparing base (f2f37d9) to head (2d538a5).
Report is 1 commits behind head on main.

Files	Patch %	Lines
...model_config_tests/qa/test_access_esm1p5_config.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #47   +/-   ##
=======================================
  Coverage   73.48%   73.48%           
=======================================
  Files          15       15           
  Lines         724      724           
=======================================
  Hits          532      532           
  Misses        192      192           

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[harshula]

Reviewed in-person.