fix: add JSON Schema 2019-09+ validation keyword - dependentRequired

[jeremyfiel]

fixes #1558

What/Why/How?

JSON Schema 2019-09 introduced a new validation keyword which applies to OpenAPI 3.1.x support of JSON Schema 2020-12.

[6.5.4. ](https://json-schema.org/draft/2020-12/json-schema-validation#section-6.5.4)[dependentRequired](https://json-schema.org/draft/2020-12/json-schema-validation#name-dependentrequired)
The value of this keyword MUST be an object. Properties in this object, if any, MUST be arrays. Elements in each array, if any, MUST be strings, and MUST be unique.

This keyword specifies properties that are required if a specific other property is present. Their requirement is dependent on the presence of the other property.

Validation succeeds if, for each name that appears in both the instance and as a name within this keyword's value, every item in the corresponding array is also the name of a property in the instance.

Omitting this keyword has the same behavior as an empty object.

Reference

Testing

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• Code changed? - Tested with redoc/reference-docs/workflows (internal)
• All new/updated code is covered with tests
• New package installed? - Tested in different environments (browser/node)

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

[changeset-bot]

🦋 Changeset detected

Latest commit: c086bc5

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@redocly/openapi-core	Patch
@redocly/cli	Patch

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[lornajane]

Changeset is good

[tatomyr]

LGTM. Thanks for the contribution!