Synchronize submodules with LLVM at llvm/llvm-project@6fbc812883ab

Updates LLVM dependencies to match
[6fbc812883ab](https://github.com/llvm/llvm-project/commit/6fbc812883ab).
- TensorFlow to
[55e85b4c9219](https://github.com/tensorflow/tensorflow/commit/55e85b4c9219)
- MLIR-HLO to
[d343113a4906](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: 402961430
diff --git a/benchmarks/TensorFlow/CMakeLists.txt b/benchmarks/TensorFlow/CMakeLists.txt
index 87b466e..6f95f86 100644
--- a/benchmarks/TensorFlow/CMakeLists.txt
+++ b/benchmarks/TensorFlow/CMakeLists.txt
@@ -21,7 +21,7 @@
   "fp16"                          # MODULE_TAGS
   # This uses the same input MLIR source as fp32 to save download time.
   # It requires users to have "--iree-flow-demote-f32-to-f16".
-  "https://storage.googleapis.com/iree-model-artifacts/MobileBertSquad-9c0042d19.tar.gz" # MLIR_SOURCE
+  "https://storage.googleapis.com/iree-model-artifacts/MobileBertSquad-89edfa50d.tar.gz" # MLIR_SOURCE
   "serving_default"               # ENTRY_FUNCTION
   # The conversion done by "--iree-flow-demote-f32-to-f16" won't change the
   # original input signature.
@@ -31,7 +31,7 @@
 set(MOBILEBERT_FP32_MODULE
   "MobileBertSquad"               # MODULE_NAME
   "fp32"                          # MODULE_TAGS
-  "https://storage.googleapis.com/iree-model-artifacts/MobileBertSquad-9c0042d19.tar.gz" # MLIR_SOURCE
+  "https://storage.googleapis.com/iree-model-artifacts/MobileBertSquad-89edfa50d.tar.gz" # MLIR_SOURCE
   "serving_default"               # ENTRY_FUNCTION
   "1x384xi32,1x384xi32,1x384xi32" # FUNCTION_INPUTS
 )
@@ -39,7 +39,7 @@
 set(MOBILENET_V2_MODULE
   "MobileNetV2"     # MODULE_NAME
   "fp32,imagenet"   # MODULE_TAGS
-  "https://storage.googleapis.com/iree-model-artifacts/MobileNetV2-9c0042d19.tar.gz" # MLIR_SOURCE
+  "https://storage.googleapis.com/iree-model-artifacts/MobileNetV2-89edfa50d.tar.gz" # MLIR_SOURCE
   "call"            # ENTRY_FUNCTION
   "1x224x224x3xf32" # FUNCTION_INPUTS
 )
@@ -47,7 +47,7 @@
 set(MOBILENET_V3SMALL_MODULE
   "MobileNetV3Small" # MODULE_NAME
   "fp32,imagenet"    # MODULE_TAGS
-  "https://storage.googleapis.com/iree-model-artifacts/MobileNetV3Small-9c0042d19.tar.gz" # MLIR_SOURCE
+  "https://storage.googleapis.com/iree-model-artifacts/MobileNetV3Small-89edfa50d.tar.gz" # MLIR_SOURCE
   "call"             # ENTRY_FUNCTION
   "1x224x224x3xf32"  # FUNCTION_INPUTS
 )