fix(fer-19) : restreindre /pont_bascule/health aux utilisateurs connectes

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/ApiResource/PontBasculeHealthCheck.php

@@ -19,6 +19,7 @@ use Symfony\Component\Serializer\Attribute\Groups;
                 description: 'Returns the connection state of the pont-bascule. Always 200, even when unreachable.',
             ),
             normalizationContext: ['groups' => ['pont_bascule:health:read']],
+            security: "is_granted('ROLE_USER')",
             provider: PontBasculeHealthProvider::class,
         ),
     ],