.pre-commit-config.yaml - roll back to clang-format v17

[winterz]

clang-format v18 is adding whitespace where we don't want it, eg:

-    KDDW_CO_AWAIT Platform::instance()->tests_wait(500);
+    KDDW_CO_AWAIT Platform::instance() -> tests_wait(500);

maybe we can control this with a setting in .clang-format