Integrate LLVM at llvm/llvm-project@76313288cd7d

Updates LLVM usage to match
[76313288cd7d](https://github.com/llvm/llvm-project/commit/76313288cd7d)

PiperOrigin-RevId: 340648011
diff --git a/SUBMODULE_VERSIONS b/SUBMODULE_VERSIONS
index 25d298e..ef9902d 100644
--- a/SUBMODULE_VERSIONS
+++ b/SUBMODULE_VERSIONS
@@ -6,7 +6,7 @@
 4fb0ff7069bd88ee85902f4d0bb62794e5f6d021 third_party/flatcc
 f2fb48c3b3d79a75a88a99fba6576b25d42ec528 third_party/googletest
 ed8d41d7ec309c0a28d1be5a0f4814bd3029bc66 third_party/llvm-bazel
-8475fa6ed6bb27d5abad418a7f77e9430aa825eb third_party/llvm-project
+76313288cd7dcd583e1f074f7165ebd54a930b93 third_party/llvm-project
 17b12a4481daa150e2d1ea3ada086b551b856707 third_party/marl
 9e970e18057e80e8af07f96d73714e395bac98d1 third_party/mlir-emitc
 d8c7ee00a687ac369e62e2032514a93a9b413502 third_party/pybind11