Convert formatting to use ruff instead of yapf + isort (#26247)

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

tests/tools/test_config_validator.py

@@ -7,11 +7,11 @@ import pytest
 
 from tools.validate_config import validate_ast
 
-_TestConfig1 = '''
+_TestConfig1 = """
 @config
 class _TestConfig1:
     pass
-'''
+"""
 
 _TestConfig2 = '''
 @config
@@ -21,12 +21,12 @@ class _TestConfig2:
     """docstring"""
 '''
 
-_TestConfig3 = '''
+_TestConfig3 = """
 @config
 @dataclass
 class _TestConfig3:
     a: int = 1
-'''
+"""
 
 _TestConfig4 = '''
 @config
@@ -37,12 +37,15 @@ class _TestConfig4:
 '''
 
 
-@pytest.mark.parametrize(("test_config", "expected_error"), [
-    (_TestConfig1, "must be a dataclass"),
-    (_TestConfig2, "must have a default"),
-    (_TestConfig3, "must have a docstring"),
-    (_TestConfig4, "must use a single Literal"),
-])
+@pytest.mark.parametrize(
+    ("test_config", "expected_error"),
+    [
+        (_TestConfig1, "must be a dataclass"),
+        (_TestConfig2, "must have a default"),
+        (_TestConfig3, "must have a docstring"),
+        (_TestConfig4, "must use a single Literal"),
+    ],
+)
 def test_config(test_config, expected_error):
     tree = ast.parse(test_config)
     with pytest.raises(Exception, match=expected_error):