Integrate LLVM at llvm/llvm-project@6883042528d0
Updates LLVM usage to match
[6883042528d0](https://github.com/llvm/llvm-project/commit/6883042528d0)
PiperOrigin-RevId: 346606080
diff --git a/SUBMODULE_VERSIONS b/SUBMODULE_VERSIONS
index ebe718b..73ef2f2 100644
--- a/SUBMODULE_VERSIONS
+++ b/SUBMODULE_VERSIONS
@@ -4,7 +4,7 @@
4fb0ff7069bd88ee85902f4d0bb62794e5f6d021 third_party/flatcc
b1fbd33c06cdb0024c67733c6fdec2009d17b384 third_party/googletest
76a21602d84dd4b1a119523954df0c1686d1a4d6 third_party/llvm-bazel
-d553243fe4b5e1992c07aff7b54b16160a4d5e97 third_party/llvm-project
+6883042528d0338b776bb2316e58999650e94892 third_party/llvm-project
55801f03f9cc69abfcf8b508a873f702c11b3b5f third_party/mlir-emitc
74d7261be17cf659d5930d4830609406bd7553e3 third_party/pffft
d8c7ee00a687ac369e62e2032514a93a9b413502 third_party/pybind11