提交swagger 对象接口补充

src/main/java/com/label/dto/UserRoleUpdateRequest.java

@@ -0,0 +1,11 @@
+package com.label.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+@Data
+@Schema(description = "用户角色变更请求")
+public class UserRoleUpdateRequest {
+    @Schema(description = "用户角色，可选值：ADMIN / REVIEWER / ANNOTATOR / UPLOADER", example = "ANNOTATOR")
+    private String role;
+}