fix GetKeyRotationStatus error

prowler/providers/aws/services/kms/kms_service.py

@@ -68,10 +68,11 @@ class KMS:
         logger.info("KMS - Get Key Rotation Status...")
         for key in self.keys:
             try:
-                regional_client = self.regional_clients[key.region]
-                key.rotation_enabled = regional_client.get_key_rotation_status(
-                    KeyId=key.id
-                )["KeyRotationEnabled"]
+                if "EXTERNAL" not in key.origin:
+                    regional_client = self.regional_clients[key.region]
+                    key.rotation_enabled = regional_client.get_key_rotation_status(
+                        KeyId=key.id
+                    )["KeyRotationEnabled"]
             except Exception as error:
                 logger.error(
                     f"{regional_client.region} -- {error.__class__.__name__}:{error.__traceback__.tb_lineno} -- {error}"