fixed Error when IndexOutOfBoundsException in setDateofBirtch in Player.java

app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java

@@ -33,7 +33,7 @@ public class Player extends Person implements Participant{
             String[] date = dateOfBirth.split("\\.");
             try{
                 this.dateOfBirth = LocalDate.of(Integer.valueOf(date[2]), Integer.valueOf(date[1]), Integer.valueOf(date[0]));
-            } catch (NumberFormatException e) {
+            } catch (NumberFormatException | IndexOutOfBoundsException e) {
                 e.printStackTrace();
                 throw new InvalidDateException("Date invalid");
             }