Synchronize submodules with LLVM at llvm/llvm-project@e068c84762ac

Updates LLVM dependencies to match
[e068c84762ac](https://github.com/llvm/llvm-project/commit/e068c84762ac).
- TensorFlow to
[db8300f963ca](https://github.com/tensorflow/tensorflow/commit/db8300f963ca)
- MLIR-HLO to
[fbe4247c0d19](https://github.com/tensorflow/mlir-hlo/commit/${MLIR_HLO_SHA?})

`./scripts/git/update_to_llvm_syncpoint.py`

Automated submodule bump from .github/workflows/update_llvm_dependent_submodules.yml

PiperOrigin-RevId: 408969066

SUBMODULE_VERSIONS.txt

diff --git a/SUBMODULE_VERSIONS.txt b/SUBMODULE_VERSIONS.txt
index ce48356..96614e1 100644
--- a/SUBMODULE_VERSIONS.txt
+++ b/SUBMODULE_VERSIONS.txt
@@ -5,13 +5,13 @@
 88b845dee001723c4a0db1fe5477de735b6d3bb0 third_party/liburing
 acd6f6f014c25e46363e718381e0b35205df2d83 third_party/libyaml
 e068c84762ac1ec34631beb5f41cebfa78fcc3df third_party/llvm-project
-839b119938b493ca2dc51597d2c11fb081d24c9c third_party/mlir-hlo
+fbe4247c0d19f561b9e54ba340280cb1cf48ff50 third_party/mlir-hlo
 3f701faace7addc75d16dea8a6cd769fa5b3f260 third_party/musl
 4c7697dbe973ed01ae6fbec37d186ebd05982e1f third_party/pybind11
 2e1b5fb39ebc2ef4cb77005f8267e4f3a6241ba1 third_party/spirv_cross
 f5417a4b6633c3217c9a1bc2f0c70b1454975ba7 third_party/spirv_headers
 b42009b3b9d4ca35bc703f5310eedc74f584be58 third_party/stblib
-8bb77977a92af20d53bcbbeeab916f170a78e519 third_party/tensorflow
+db8300f963ca42f458d7ac1ae930a64b40c385d3 third_party/tensorflow
 058e89011fceca912d43638ebb6b85992147fcfe third_party/tracy
 9d10a96f2d57c3c37e167f2e73c9a31ac2e51fa5 third_party/vulkan_headers
 8d4a9e9174a9c6ad6a3a3ae981b915ef13fc12c4 third_party/vulkan_memory_allocator

third_party/mlir-hlo

diff --git a/third_party/mlir-hlo b/third_party/mlir-hlo
index 839b119..fbe4247 160000
--- a/third_party/mlir-hlo
+++ b/third_party/mlir-hlo
@@ -1 +1 @@
-Subproject commit 839b119938b493ca2dc51597d2c11fb081d24c9c
+Subproject commit fbe4247c0d19f561b9e54ba340280cb1cf48ff50

third_party/tensorflow

diff --git a/third_party/tensorflow b/third_party/tensorflow
index 8bb7797..db8300f 160000
--- a/third_party/tensorflow
+++ b/third_party/tensorflow
@@ -1 +1 @@
-Subproject commit 8bb77977a92af20d53bcbbeeab916f170a78e519
+Subproject commit db8300f963ca42f458d7ac1ae930a64b40c385d3