Synchronize submodules with LLVM at llvm/llvm-project@1b97cdf885d6
Synchronize submodules with LLVM at llvm/llvm-project@1b97cdf885d6

Updates LLVM dependencies to match
[1b97cdf885d6](https://github.com/llvm/llvm-project/commit/1b97cdf885d6).
- llvm-bazel to
  [fdf47794a75e](https://github.com/google/llvm-bazel/commit/fdf47794a75e)
- TensorFlow to
[50ae55b2eb72](https://github.com/tensorflow/tensorflow/commit/50ae55b2eb72)

`./scripts/git/update_to_llvm_syncpoint.py`

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

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/iree/pull/4194 from google:auto_submodule_update 6043362ac4bd5a778c0b3fb4ded4594c3e0d4d75
PiperOrigin-RevId: 348661704

iree-org/iree,iree-org/iree,google/iree,google/iree,google/iree,iree-org/iree,iree-org/iree,iree-org/iree,google/iree,iree-org/iree,google/iree,google/iree,google/iree,iree-org/iree