apply ruff formatting to test_loader.py

Assisted-by: Claude Sonnet 4.6

Author: MikeGoldsmith

opentelemetry-sdk/tests/_configuration/file/test_loader.py

@@ -232,9 +232,7 @@ def test_schema_validation_invalid_enum(self):
         with tempfile.NamedTemporaryFile(
             suffix=".yaml", delete=False, mode="w"
         ) as temp_file:
-            temp_file.write(
-                'file_format: "1.0"\nlog_level: INVALID_LEVEL'
-            )
+            temp_file.write('file_format: "1.0"\nlog_level: INVALID_LEVEL')
             temp_path = temp_file.name
 
         try: