fix: kakaotalk bulkstatus API call 매핑값 fix

mens-api/src/main/java/kr/xit/ens/kakao/v2/service/KkotalkEltrcDocService.java

@@ -272,10 +272,11 @@ public class KkotalkEltrcDocService extends AbstractService implements
         if(!errors.isEmpty()) {
             throw BizRuntimeException.create(errors.toString());
         }
+        String param = "{\"envelopeIds\":" + JsonUtils.toJson(envelopes) + "}";
         return webClient.exchangeKkotalk(
             HOST + API_BULKSTATUS[0],
             HttpMethod.valueOf(API_BULKSTATUS[1]),
-            JsonUtils.toJson(envelopes),
+            JsonUtils.toJson(param),
             KkotalkDTO.BulkStatusResponse.class,
             getRlaybsnmInfo(reqDTO));
     }