Update product and band names in ML notebook Machine_learning_with_ODC (#1276)

[jennaguffogg]

Proposed changes

Update product used in notebook to 'ga_ls8cls9c_gm_cyear_3' and update band references from 'red', 'blue' etc to 'nbart_red', 'nbart_blue'.

Checklist

(Replace [ ] with [x] to check off)

• Remove any unused/empty code cells
• Include relevant tags in the final notebook cell (refer to the DEA Tags Index, and re-use tags if possible)
• Clear all outputs, run notebook from start to finish, and save the notebook in the state where all cells have been sequentially evaluated
• Test notebook on both the NCI and DEA Sandbox (flag if not working as part of PR and ask for help to solve if needed)
• If applicable, update the Notebook currently compatible with the NCI|DEA Sandbox environment only line below the notebook title to reflect the environments the notebook is compatible with
• Check for any spelling mistakes using the DEA Sandbox's built-in spellchecker (double click on markdown cells then right-click on pink highlighted words). For example:

[review-notebook-app]

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[robbibt]

This looks great, thanks @jennaguffogg! There seems to be an issue with the tests at the moment; I think you can "Squash and merge" this even if they don't pass, as I don't think it's related to your changes

[JM-GA]

Hi @jennaguffogg - looks like tests still failing on a connection issue to aws - I think the changes you have made are safe and good to merge into develop branch