fix tests

Author: lukaszmachaj

src/test/java/com/capgemini/training/appointmentbooking/dataaccess/repository/AppointmentRepositoryTest.java

@@ -12,6 +12,7 @@
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
+import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.List;
 import java.util.Optional;
@@ -82,7 +83,7 @@ void testFindByDateTimeBetweenAndStatus() {
         // then
         assertThat(result).isNotEmpty().hasSize(3);
         assertThat(result).extracting(AppointmentEntity::getStatus).containsOnly(status);
-    };
+    }
 
     @Test
     void testFindById() {
@@ -103,9 +104,9 @@ void testFindById() {
     }
 
     private Instant toInstant(String date) {
-        return LocalDateTime.parse(date, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))
-                .atZone(ZoneId.of("Europe/Warsaw"))
-                .toInstant();
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+        ZonedDateTime zonedDateTime = LocalDateTime.parse(date, formatter).atZone(ZoneId.systemDefault());
+        return zonedDateTime.toInstant();
     }
 
     @Test