Apply new rector rules regarding to PHP version to 8.4

src/Bundle/ChillDocStoreBundle/migrations/Version20240322100107.php

@@ -16,6 +16,7 @@ use Doctrine\Migrations\AbstractMigration;
 
 final class Version20240322100107 extends AbstractMigration
 {
+    #[\Override]
     public function getDescription(): string
     {
         return 'StoredObject: add deleteAt and generationErrors columns';
@@ -28,6 +29,7 @@ final class Version20240322100107 extends AbstractMigration
         $this->addSql('COMMENT ON COLUMN chill_doc.stored_object.deleteAt IS \'(DC2Type:datetime_immutable)\'');
     }
 
+    #[\Override]
     public function down(Schema $schema): void
     {
         $this->addSql('ALTER TABLE chill_doc.stored_object DROP deleteAt');