Fix missing ruff error TCH002 from data_classes

Author: ericbn

aws_lambda_powertools/utilities/data_classes/kinesis_firehose_event.py

@@ -5,12 +5,13 @@
 import warnings
 from dataclasses import dataclass, field
 from functools import cached_property
-from typing import Any, Callable, ClassVar, Iterator
-
-from typing_extensions import Literal
+from typing import TYPE_CHECKING, Any, Callable, ClassVar, Iterator
 
 from aws_lambda_powertools.utilities.data_classes.common import DictWrapper
 
+if TYPE_CHECKING:
+    from typing_extensions import Literal
+
 
 @dataclass(repr=False, order=False, frozen=True)
 class KinesisFirehoseDataTransformationRecordMetadata: