gifn-apply: use Ruff's isort implementation

Change-Id: I9a8254a643916a7fb2a035bd2cfcac4370316c0c
diff --git a/tools/git-if-needed/python/gifn_apply/defs.py b/tools/git-if-needed/python/gifn_apply/defs.py
index 32b13e8..e5971f3 100644
--- a/tools/git-if-needed/python/gifn_apply/defs.py
+++ b/tools/git-if-needed/python/gifn_apply/defs.py
@@ -5,9 +5,9 @@
 from __future__ import annotations
 
 import dataclasses
-
 from typing import TYPE_CHECKING
 
+
 if TYPE_CHECKING:
     import logging
     import pathlib