chore: verify the ISO-2 country move and renumber its migration

migrations/Version20260927090000.php

@@ -16,7 +16,7 @@ use Doctrine\Migrations\AbstractMigration;
  * existing rows are converted to match. The flag icons and the country filters use the
  * same vocabulary and are switched with it.
  */
-final class Version20260813120000 extends AbstractMigration
+final class Version20260927090000 extends AbstractMigration
 {
     private const TO_ISO = [
         'a' => 'at',