fix: make properties of RenderTargetInfo be required

Author: nytamin

v1/specification/open-api/server-api.yaml

@@ -1108,6 +1108,9 @@ components:
                 $ref: "#/components/schemas/GraphicInstanceId"
               graphic:
                 $ref: "#/components/schemas/GraphicInfo"
+            required:
+              - graphicInstanceId
+              - graphic
       required:
         - renderTarget
         - name