OAS v3 spec (`oas_v3.json`) is invalid

[andrewmbenton]

Issue Summary

When running oas_v3.json through swagger-parser there are a few validation issues. The biggest one is that the properties of the components object (e.g. parameters, responses, requestBodies, etc.) must have values that are maps of strings to objects or references. And actually in OAS 3.1.0 the schemas property looks like it must be a map of strings to objects, i.e. references aren't allowed. In your oas_v3.json the values of these properties are just reference objects. The relevant section of the OAS 3.1.0 spec is here: https://spec.openapis.org/oas/v3.1.0#componentsObject

Additionally tags has a duplicate entry with name "Segmenting Contacts".

I have manually fixed these issues locally and can submit a pull request, but if you have an automated system that generates the oas_v3.json file the it would naturally be better to fix these issues there at the source.

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[julealgon]

Additionally tags has a duplicate entry with name "Segmenting Contacts".

This has been a problem for us as well as it prevents the file from being opened in ApiMatic and converted to v3.0.

I've additionally found the following issues:

• https://github.com/sendgrid/sendgrid-oai/issues/121