evict cache on logout

backend/src/main/java/com/petshop/backend/controller/AuthController.java

@@ -347,6 +347,7 @@ public class AuthController {
         User user = authHelper.getAuthenticatedUser();
         user.setTokenVersion(user.getTokenVersion() + 1);
         userRepository.save(user);
+        userAuthCacheService.evict(user.getId());
         Map<String, String> response = new HashMap<>();
         response.put("message", "Logged out successfully");
         return ResponseEntity.ok(response);