spec-first / connexion / 24286949312

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Replace deprecated `jsonschema.RefResolver` with `referencing.Registry` (#2023)

Fixes #1786 (which was closed prematurely as pointed out in
https://github.com/spec-first/connexion/issues/1786#issuecomment-2474017122)

Fixes the following deprecation warnings:
```
connexion/json_schema.py:18
  /home/randy/connexion/connexion/json_schema.py:18: 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.
    from jsonschema import Draft4Validator, RefResolver

connexion/json_schema.py:19
  /home/randy/connexion/connexion/json_schema.py:19: 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.
    from jsonschema.exceptions import RefResolutionError, ValidationError  # noqa
```

See also
https://python-jsonschema.readthedocs.io/en/latest/referencing/#migrating-from-refresolver

---------

Co-authored-by: Ruwann <ruwanlambrichts@gmail.com>

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