[FEATURE] Support jsonschema 4.18.0+

[allanlewis]

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

As of v4.18.0, jsonschema emits the following warnings:

DeprecationWarning: jsonschema.exceptions.RefResolutionError is deprecated as of version 4.18.0. If you wish to catch potential reference resolution errors, directly catch referencing.exceptions.Unresolvable.
DeprecationWarning: jsonschema.RefResolver is deprecated as of v4.18.0, in favor of the https://github.com/python-jsonschema/referencing library, which provides more compliant referencing behavior as well as more flexible APIs for customization. A future release will remove RefResolver. Please file a feature request (on referencing) if you are missing an API for the kind of customization you need.

Describe the solution you'd like

It would be good if this package could address these warning before these deprecations turn into removals.

Describe alternatives you've considered

jsonschema could be pinned to older versions, but we would need to support 4.18.x at some point.

Additional context

I have raised a similar issue in hypothesis-jsonschema: python-jsonschema/hypothesis-jsonschema#102

[allanlewis]

This doesn't appear to have made it into v3.21 😞

[allanlewis]

I see that python-jsonschema/hypothesis-jsonschema#102 appears to have been resolved in 0.23, but this package explicitly limits hypothesis-jsonschema to <0.23 😕

[Stranger6667]

Originally I wanted to update hypothesis-jsonschema and provide an api to control the generated characters, but later postponed it. Probably, the update itself should be compatible, so maybe a patch version would work

[Stranger6667]

I am going to postpone it a bit more - as jsonschema moves towards the referencing library, it requires quite more work to properly integrate it. Additionally, I noticed that hypothesis-jsonschema uses some private jsonschema APIs (e.g. _RefResolutionError that is deprecated), so it should be updated too.

But the next release will support hypothesis-jsonschema==0.23, so there are much fewer deprecation warnings.

In any event, I made some progress towards integrating referencing and will focus on it after this release.