Format files with Ruff (#17643)

I thought ruff check would also format, but it doesn't.

This runs ruff format in CI and dev scripts. The first commit is just a
run of `ruff format .` in the root directory.

synmark/__main__.py

@@ -40,7 +40,7 @@ T = TypeVar("T")
 
 
 def make_test(
-    main: Callable[[ISynapseReactor, int], Coroutine[Any, Any, float]]
+    main: Callable[[ISynapseReactor, int], Coroutine[Any, Any, float]],
 ) -> Callable[[int], float]:
     """
     Take a benchmark function and wrap it in a reactor start and stop.