Changes to Publish a video to social media

api operation id socialMedia.createPublications removed and replaced with publishVideo

added the non-success response with the status 409

added the non-success response with the status 404

added the non-success response with the status 400

added the non-success response with the status 503

added the optional property youtubeThumbnailTimestampMs to the response with the 200 status

the oneOf[subschema #1]/data response's property type changed from no type to object for status 403

the response property oneOf[subschema #1]/data became required for the status 403

added the required property oneOf[subschema #1]/data/feature to the response with the 403 status