JSON Schemas for v3.0 Encoding object missing pattern properties for extensions

[MikeEdgar]

The schema for the Encoding object is missing patternProperties for extension properties.

patternProperties:
  '^x-': {}

OpenAPI-Specification/schemas/v3.0/schema.yaml

Lines 1001 to 1024 in 9764b45

	Encoding:
	type: object
	properties:
	contentType:
	type: string
	headers:
	type: object
	additionalProperties:
	oneOf:
	- $ref: '#/definitions/Header'
	- $ref: '#/definitions/Reference'
	style:
	type: string
	enum:
	- form
	- spaceDelimited
	- pipeDelimited
	- deepObject
	explode:
	type: boolean
	allowReserved:
	type: boolean
	default: false
	additionalProperties: false

I will open a PR if the maintainers agree this should be added.

[MikeRalphson]

Agree with your assertion, a PR would be great against the main branch.