style(tests): fix import ordering per ruff linter

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

tests/test_config_validators.py

@@ -1,7 +1,8 @@
 """Tests for app/utils/config_validator/validators.py module."""
 
+from unittest.mock import patch
+
 import pytest
-from unittest.mock import Mock, patch
 
 from app.utils.config_validator.validators import (
     check_all_configs,

tests/test_filename_utils.py

@@ -384,9 +384,10 @@ class TestUniqueFilepathWithCounter:
 
     def test_get_unique_filepath_with_counter_extreme_collision(self, tmp_path):
         """Test extreme edge case when more than 9999 collisions occur"""
-        from app.utils.filename_utils import get_unique_filepath_with_counter
         from unittest.mock import patch
 
+        from app.utils.filename_utils import get_unique_filepath_with_counter
+
         # Create base file to trigger counter logic
         (tmp_path / "test.pdf").touch()