fix: move imports to top for ruff lint compliance

Author: Gayathri Srividya Rajavarapu

tests/catalog/test_rest.py

@@ -3164,12 +3164,11 @@ def test_load_table_without_storage_credentials(
     assert actual == expected
 
 
+
 # Tests for issue #3422: REST catalog auth cannot be configured via environment
 # variables unless auth JSON strings are decoded.
 
-
 import json
-
 import pytest