Changes to Preview a GitHub skill source

added the non-success response with the status 422

added PlatformSkillSourcePreviewRequest subschema #2 to the request body allOf list

the request's body type changed from object to no type

removed the media type text/event-stream for the response with the status 200

removed the request property source_url

removed the request property stream

added the new spend_limit_exceeded enum value to the code response property for the response status 400

added the new spend_limit_exceeded enum value to the code response property for the response status 401

added the new spend_limit_exceeded enum value to the code response property for the response status 403

added the new spend_limit_exceeded enum value to the code response property for the response status 408

added the new spend_limit_exceeded enum value to the code response property for the response status 413

added the new spend_limit_exceeded enum value to the code response property for the response status 429

added the new spend_limit_exceeded enum value to the code response property for the response status 500

added the new spend_limit_exceeded enum value to the code response property for the response status 503

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 400

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 401

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 403

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 408

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 413

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 429

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 500

added the new spend_limit_exceeded enum value to the errors/items/code response property for the response status 503

added the new token_limit_exceeded enum value to the code response property for the response status 400

added the new token_limit_exceeded enum value to the code response property for the response status 401

added the new token_limit_exceeded enum value to the code response property for the response status 403

added the new token_limit_exceeded enum value to the code response property for the response status 408

added the new token_limit_exceeded enum value to the code response property for the response status 413

added the new token_limit_exceeded enum value to the code response property for the response status 429

added the new token_limit_exceeded enum value to the code response property for the response status 500

added the new token_limit_exceeded enum value to the code response property for the response status 503

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 400

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 401

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 403

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 408

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 413

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 429

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 500

added the new token_limit_exceeded enum value to the errors/items/code response property for the response status 503

endpoint added