[RORDEV-1567] Use new logged_user field in the ECS serializer (#1179)

Author: mgoworko

core/src/main/scala/tech/beshu/ror/accesscontrol/audit/ecs/EcsV1AuditLogSerializer.scala

@@ -60,7 +60,7 @@ object EcsV1AuditLogSerializer {
       ),
     ),
     withPrefix("user")(
-      AuditFieldPath("name") -> AuditFieldValueDescriptor.User,
+      AuditFieldPath("name") -> AuditFieldValueDescriptor.LoggedUser,
       withPrefix("effective")(
         AuditFieldPath("name") -> AuditFieldValueDescriptor.ImpersonatedByUser,
       ),