chore(deps-dev): bump transformers from 5.15.0 to 5.15.1 (#44)

Bumps [transformers](https://github.com/huggingface/transformers) from 5.15.0 to 5.15.1.
- [Release notes](https://github.com/huggingface/transformers/releases)
- [Commits](huggingface/transformers@v5.15.0...v5.15.1)

---
updated-dependencies:
- dependency-name: transformers
  dependency-version: 5.15.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -45,7 +45,7 @@ client = ["openai>=1.0"]
 download = ["huggingface_hub>=0.25"]
 # transformers backend (Phase 1 oracle). Pinned to the benchmark version for
 # reproducibility; see reproducibility.lock.yaml. Requires a separate ROCm torch.
-transformers = ["transformers==5.15.0"]
+transformers = ["transformers==5.15.1"]
 # Convenience alias; pyyaml is already core. Reserved for future eval-only deps.
 eval = ["pyyaml"]
 # OmniDocBench-ROCm platform integration (conformance, score, publish).