update api to java 21

Signed-off-by: Otavio Santana <[email protected]>

Author: otaviojava

jnosql-tinkerpop/src/test/java/org/eclipse/jnosql/databases/tinkerpop/mapping/entities/Animal.java

@@ -50,10 +50,9 @@ public boolean equals(Object o) {
         if (this == o) {
             return true;
         }
-        if (!(o instanceof Animal)) {
+        if (!(o instanceof Animal animal)) {
             return false;
         }
-        Animal animal = (Animal) o;
         return Objects.equals(id, animal.id) &&
                 Objects.equals(name, animal.name);
     }

jnosql-tinkerpop/src/test/java/org/eclipse/jnosql/databases/tinkerpop/mapping/entities/Book.java

@@ -59,10 +59,9 @@ public boolean equals(Object o) {
         if (this == o) {
             return true;
         }
-        if (!(o instanceof Book)) {
+        if (!(o instanceof Book book)) {
             return false;
         }
-        Book book = (Book) o;
         return Objects.equals(id, book.id);
     }