[Feature] Support Jackson 3.x release line

Feature Description

Jackson has released major new 3.x version [1], this is major breaking change [2] comparing to 2.x release line, including both package and artifact changes.

[1] https://github.com/FasterXML/jackson/wiki/Jackson-Release-3.0
[2] https://github.com/FasterXML/jackson-future-ideas/wiki/JSTEP-1

Use Case

Swagger tightly integrates with Jackson in core (not to mention other components) and it may not be possible to support both versions (2.x and 3.x) at the same time.

Suggested Solution (optional)

Thinking about possible options, having new Swagger 3.x release line would be probably the best way to move forward.

Alternatives Considered

Support both versions (2.x and 3.x) at the same time. It may not be possible, or otherwise maintainable.

Additional Context

Checklist

• I have searched the existing issues to ensure this is not a duplicate.
• This feature would be useful to more than just my use case.
• I have provided enough detail for the maintainers to understand the scope of the request.

Review the Jackson 3.0 and JSTEP-1 references, then inspect the merged pull request #5314 for the current direction. Identify the swagger-core components and compatibility boundaries affected; done means an agreed, implementable scope for Jackson 3.x support.