REPO-1764: OpenAPI Spec: Workflow: Incorrect model schema and status code for PUT and POST task variable call    - updated to use the correct model schema for PUT and POST task variable call
REPO-1764: OpenAPI Spec: Workflow: Incorrect model schema and status code for PUT and POST task variable call
   - updated to use the correct model schema for PUT and POST task variable call

Alfresco/rest-api-explorer,Alfresco/rest-api-explorer,Alfresco/rest-api-explorer