feat: upgrade project to symfony 7.4

tests/Command/BpnSyncContingentsCommandTest.php

@@ -88,7 +88,7 @@ class BpnSyncContingentsCommandTest extends TestCase
         );
 
         $application = new Application();
-        $application->add($command);
+        $application->addCommand($command);
 
         $tester = new CommandTester($application->find('app:bpn:sync-contingents'));
         $tester->execute(['--horizon-months' => '1']);