ruff format fix

Author: holtskinner

src/a2a/server/tasks/database_push_notification_config_store.py

@@ -94,7 +94,7 @@ def __init__(
 
         if encryption_key:
             try:
-                from cryptography.fernet import Fernet  # noqa: PLC0415
+                from cryptography.fernet import Fernet
             except ImportError as e:
                 raise ImportError(
                     "DatabasePushNotificationConfigStore with encryption requires the 'cryptography' "
@@ -166,7 +166,7 @@ def _from_orm(
         payload = model_instance.config_data
 
         if self._fernet:
-            from cryptography.fernet import InvalidToken  # noqa: PLC0415
+            from cryptography.fernet import InvalidToken
 
             try:
                 decrypted_payload = self._fernet.decrypt(payload)