[ci] Add missing overrides

Author: hazendaz

src/test/java/org/apache/ibatis/submitted/default_method/Mapper.java

@@ -1,5 +1,5 @@
 /*
- *    Copyright 2009-2022 the original author or authors.
+ *    Copyright 2009-2023 the original author or authors.
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -31,6 +31,7 @@ default User defaultGetUser(Object... args) {
   }
 
   interface SubMapper extends Mapper {
+    @Override
     default User defaultGetUser(Object... args) {
       return getUserByIdAndName((String) args[0], (Integer) args[1]);
     }

src/test/java/org/apache/ibatis/submitted/enum_interface_type_handler/Color.java

@@ -1,5 +1,5 @@
 /*
- *    Copyright 2009-2022 the original author or authors.
+ *    Copyright 2009-2023 the original author or authors.
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -17,16 +17,19 @@
 
 public enum Color implements HasValue {
   WHITE {
+    @Override
     public int getValue() {
       return 1;
     }
   },
   RED {
+    @Override
     public int getValue() {
       return 2;
     }
   },
   BLUE {
+    @Override
     public int getValue() {
       return 3;
     }

src/test/java/org/apache/ibatis/submitted/nestedresulthandler/Item.java

@@ -19,6 +19,7 @@ public class Item {
   private Integer id;
   private String name;
 
+  @Override
   public String toString() {
     return new StringBuilder().append("Item(").append(id).append(", ").append(name).append(" )").toString();
   }

src/test/java/org/apache/ibatis/submitted/nestedresulthandler/Person.java

@@ -24,6 +24,7 @@ public class Person {
   private String name;
   private final List<Item> items = new ArrayList<>();
 
+  @Override
   public String toString() {
     return new StringBuilder().append("Person(").append(id).append(", ").append(name).append(", ").append(items)
         .append(" )").toString();

src/test/java/org/apache/ibatis/submitted/nestedresulthandler/PersonItemPair.java

@@ -1,5 +1,5 @@
 /*
- *    Copyright 2009-2022 the original author or authors.
+ *    Copyright 2009-2023 the original author or authors.
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@ public class PersonItemPair {
   private Person person;
   private Item item;
 
+  @Override
   public String toString() {
     return new StringBuilder().append("PersonItemPair(").append(person).append(", ").append(item).append(" )")
         .toString();