fix(autoware_universe_utils): fix constVariableReference (autowarefoundation#7883)

fix:constVariableReference

Signed-off-by: kobayu858 <yutaro.kobayashi@tier4.jp>
Signed-off-by: Y.Hisaki <yhisaki31@gmail.com>

Author: kobayu858

common/object_recognition_utils/src/conversion.cpp

@@ -46,7 +46,7 @@ DetectedObjects toDetectedObjects(const TrackedObjects & tracked_objects)
   autoware_perception_msgs::msg::DetectedObjects detected_objects;
   detected_objects.header = tracked_objects.header;
 
-  for (auto & tracked_object : tracked_objects.objects) {
+  for (const auto & tracked_object : tracked_objects.objects) {
     detected_objects.objects.push_back(toDetectedObject(tracked_object));
   }
   return detected_objects;
@@ -74,7 +74,7 @@ TrackedObjects toTrackedObjects(const DetectedObjects & detected_objects)
   TrackedObjects tracked_objects;
   tracked_objects.header = detected_objects.header;
 
-  for (auto & detected_object : detected_objects.objects) {
+  for (const auto & detected_object : detected_objects.objects) {
     tracked_objects.objects.push_back(toTrackedObject(detected_object));
   }
   return tracked_objects;