[REQ] Support for OpenAPI Spec 3.1

[westn]

Is your feature request related to a problem? Please describe.

Support for OpenAPI Spec 3.1, released last month: https://github.com/OAI/OpenAPI-Specification/releases/tag/3.1.0

Describe the solution you'd like

Add support for OpenAPI Spec 3.1

Additional context

Couldn't see any other mention of this besides a short mention in #15
Another note on https://www.openapis.org/blog/2020/06/18/openapi-3-1-0-rc0-its-here which mention that the specification-change is bigger than it sounds and might break some tooling.

[spacether]

We use swagger-parser to parse openapi specs. That project must implement v 3.1 spec parsing before we can implement it in the generators.

[darkbasic]

https://github.com/swagger-api/swagger-parser/commits/oas3.1

[cgfarmer4]

Any updates to share on potentially updating the generators to OAS 3.1?

[gunsluo]

Any updates to share on potentially updating the generators to OAS 3.1?

swagger-api/swagger-parser#1535, there has been no update for half a year.