SNOW-2062305 fix Self type annotation import

Author: sfc-gh-mmishchenko

src/snowflake/connector/result_batch.py

@@ -6,7 +6,9 @@
 from base64 import b64decode
 from enum import Enum, unique
 from logging import getLogger
-from typing import TYPE_CHECKING, Any, Callable, Iterator, NamedTuple, Self, Sequence
+from typing import TYPE_CHECKING, Any, Callable, Iterator, NamedTuple, Sequence
+
+from typing_extensions import Self
 
 from .arrow_context import ArrowConverterContext
 from .backoff_policies import exponential_backoff