Convert .buildkite to ruff format (#17656)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

.buildkite/lm-eval-harness/conftest.py

@@ -8,11 +8,14 @@ def pytest_addoption(parser):
     parser.addoption(
         "--config-list-file",
         action="store",
-        help="Path to the file listing model config YAMLs (one per line)")
-    parser.addoption("--tp-size",
-                     action="store",
-                     default="1",
-                     help="Tensor parallel size to use for evaluation")
+        help="Path to the file listing model config YAMLs (one per line)",
+    )
+    parser.addoption(
+        "--tp-size",
+        action="store",
+        default="1",
+        help="Tensor parallel size to use for evaluation",
+    )
 
 
 @pytest.fixture(scope="session")
@@ -33,7 +36,8 @@ def pytest_generate_tests(metafunc):
         config_dir = config_list_file.parent
         with open(config_list_file, encoding="utf-8") as f:
             configs = [
-                config_dir / line.strip() for line in f
+                config_dir / line.strip()
+                for line in f
                 if line.strip() and not line.startswith("#")
             ]
         metafunc.parametrize("config_filename", configs)