[ITA-2455] log level WARN in ValidationExceptionMapper

Author: frodeto

servicebuilder-core-addons/src/main/java/no/obos/util/servicebuilder/exception/ValidationExceptionMapper.java

@@ -24,7 +24,7 @@ public ValidationExceptionMapper(ExceptionUtil exceptionUtil) {
     public Response toResponse(ValidationException exception) {
         return exceptionUtil.handle(exception, cfg -> cfg
                 .status(BAD_REQUEST.getStatusCode())
-                .logLevel(LogLevel.ERROR)
+                .logLevel(LogLevel.WARN)
                 .detail("Valideringsfeil: " + exception.getLocalizedMessage())
                 .logger(log)
         );