Remove deprecated RefResolver jsonschema validataion

[Geary-Layne]

Linear - 522

As of jsonschema 4.18 (I think) the use of RefResolver has been deprecated in preference of Registry. There is very little code changes here, and all within one file.

Note: This code requires jsonschema to be version 4.21 (or beyond) and a new package 'referencing'. I installed both with pip.

[mackenzie-grimes-noaa]

I read through the jsonschema docs and was pretty lost with all the resources, references, and registries. Thanks for updating this.

[rabellino-noaa]

referencing is standard python package yeah?

[Geary-Layne]

As standard as json and jsonschema.

[mackenzie-grimes-noaa]

The docs weren't super clear, but referencing is technically a 3rd-party library that gets installed along with jsonschema when you run pip install jsonschema. So we should already have it.

(Source: pyproject.toml file from jsonschema).

[Geary-Layne]

Thanks fro the clarification. Locally I had an old jsonschema, so I directly installed referencing, and later had realized I had to update jsonschema, so I didn't know they came together, or that referencing was a third party. But this does explain why the code worked on github.

[rabellino-noaa]

I don't think the changes in imports will have an impact on the builds (famous last words)