ruff

2352de22 - Slight speed-up for lowercase and uppercase identifier checks (#9798)

Slight speed-up for lowercase and uppercase identifier checks (#9798) It turns out that for ASCII identifiers, this is nearly 2x faster: ``` Parser/before time: [15.388 ns 15.395 ns 15.406 ns] Parser/after time: [8.3786 ns 8.5821 ns 8.7715 ns] ```