Intertidal updates for latest Sandbox image (to merge when released)

[robbibt]

This PR makes some minor changes to DEA Intertidal code for compatibility with the latest "unstable" DEA Sandbox image.

Also replaces the pickled Xarray dataset with a NetCDF file as this pickle no longer works with newer version of Xarray/Pandas.

[github-actions]

For full integration test results, refer to the Tests directory README.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.5%. Comparing base (331aac1) to head (83e0a90).

❗ Current head 83e0a90 differs from pull request most recent head 094f893. Consider uploading reports for the commit 094f893 to get more accurate results

Additional details and impacted files

@@          Coverage Diff          @@
##            main     #84   +/-   ##
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  Coverage   65.5%   65.5%           
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  Files          8       8           
  Lines        714     714           
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  Hits         468     468           
  Misses       246     246           

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[erialC-P]

Thanks @robbibt
That was a lot of work tracking down the updated modules, thanks for doing that!