JSON Schema $ref use issue

[Relequestual]

The below extract is from a JSON Schema in this repo.

project-open-data-dashboard/schema/catalog.json

Lines 7 to 11 in acfb052

	"items":{
	"$ref":"single_entry.json",
	"minItems": 1,
	"uniqueItems": true
	}

The JSON Schema uses "draft-04".
In draft-04, when $ref is used, all other keywords MUST ("SHALL") be ignored.

https://datatracker.ietf.org/doc/html/draft-pbryan-zyp-json-ref-03#section-3

Any members other than "$ref" in a JSON Reference object SHALL be
ignored.

We (JSON Schema) later bundled the separate JSON Ref specification into the JSON Schema specification.

As of draft 2019-09, $ref can be used alongside other keywords without this adverse effect, however this schema and many others in this repo use draft-04, and so may have instances validate successfully unexpectidly.

[mogul]

Thanks so much for reaching out to us! As it turns out, we're on the cusp of replacing this dashboard with reporting that's more native to CKAN, so we won't be fixing this issue here.