Changes to Get a thread

removed the required property thread/billable from the response with the 200 status

removed the required property thread/issueDetection from the response with the 200 status

removed the required property thread/upstreamSignalId from the response with the 200 status

added the new gitcafe enum value to the messages/items/source response property for the response status 200

added the new gitcafe enum value to the thread/source/anyOf[subschema #1] response property for the response status 200

added the optional property thread/sourceIssueId to the response with the 200 status

added the required property thread/billable to the response with the 200 status

added the required property thread/issueDetection to the response with the 200 status

added the required property thread/upstreamSignalId to the response with the 200 status

removed the required property messages/items/content/items/anyOf[subschema #2]/reasoning from the response with the 200 status

added the optional property messages/items/content/items/anyOf[subschema #2]/reasoningTokens to the response with the 200 status