Re-update to LLVM 19 rc2

cuviper · cuviper · commit 5ef895e2cfe6 · 2024-08-13T16:43:52.000-07:00
The update in rust-lang#128677 was accidentally reverted in rust-lang#128962.
diff --git a/src/llvm-project b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 57ae1a3474057fead2c438928ed368b3740bf0ec
+Subproject commit ccf4c38bdd73f1a37ec266c73bdaef80e39f8cf6
