Integrate LLVM at llvm/llvm-project@a48d480e1f7e

Updates LLVM usage to match
[a48d480e1f7e](https://github.com/llvm/llvm-project/commit/a48d480e1f7e)

PiperOrigin-RevId: 335597620

SUBMODULE_VERSIONS

diff --git a/SUBMODULE_VERSIONS b/SUBMODULE_VERSIONS
index 6b66160..ffd3261 100644
--- a/SUBMODULE_VERSIONS
+++ b/SUBMODULE_VERSIONS
@@ -5,7 +5,7 @@
 a5d9d0f7d368054fd1691aedf1db4116efcc233e third_party/flatbuffers
 4fb0ff7069bd88ee85902f4d0bb62794e5f6d021 third_party/flatcc
 f2fb48c3b3d79a75a88a99fba6576b25d42ec528 third_party/googletest
-3641d375f6747237b1b55a25a55e9028d8a67a02 third_party/llvm-project
+a48d480e1f7ebc5d5f93507fe1f519496621e259 third_party/llvm-project
 17b12a4481daa150e2d1ea3ada086b551b856707 third_party/marl
 08c41f61f4f5f17728c9e0f48640eaa32588b63b third_party/mlir-emitc
 d8c7ee00a687ac369e62e2032514a93a9b413502 third_party/pybind11