OpenAPI 3.x.y - all the required fields validation needs to take account of $ref field #2264
Description
If we have spec object, that can be referenced with Reference Object and it contains fixed fields that are required, we need to make sure, that --required lint rules only triggeres where $ref field is missing.
NOTE: please also check AsyncAPI rules if they are OK as part of this issue, if not, please create separate issue for AsyncAPI