change level of stock logs

src/main/java/com/danielbohry/stocks/service/StockService.java

@@ -29,12 +29,12 @@ public class StockService {
             return emptyList();
         }
 
-        log.info("Querying stock with query [{}]", query);
+        log.debug("Querying stock with query [{}]", query);
         return repository.findLike(query);
     }
 
     public Quote getByCode(String code) {
-        log.info("Getting stock by code [{}]", code);
+        log.debug("Getting stock by code [{}]", code);
         return repository.findByCode(code);
     }