fix(deps): update sentence-transformers requirement from >=2.7.0 to >=5.5.1 in /nlp-orchestrator

[dependabot]

Updates the requirements on sentence-transformers to permit the latest version.

Release notes

Sourced from sentence-transformers's releases.

v5.5.1 - Small Multimodal patch

This patch release fixes a small quirk with multimodal inference when using single-key multimodal inputs like model.encode({"image": ...}).

Install this version with

# Training + Inference
pip install sentence-transformers[train]==5.5.1
Inference only, use one of:
pip install sentence-transformers==5.5.1
pip install sentence-transformers[onnx-gpu]==5.5.1
pip install sentence-transformers[onnx]==5.5.1
pip install sentence-transformers[openvino]==5.5.1
Multimodal dependencies (optional):
pip install sentence-transformers[image]==5.5.1
pip install sentence-transformers[audio]==5.5.1
pip install sentence-transformers[video]==5.5.1
Or combine as needed:
pip install sentence-transformers[train,onnx,image]==5.5.1

Bug fixed

Previously, inference like model.encode({"image": ...}) or model.encode([{"image": ...}, ...]) would be inferred as the ("image",) modality, which differed from the inferred modality of "image" for just model.encode(my_image) or model.encode([my_image, my_image_2, ...]).

This results in confusing errors if the model doesn't have a modality_config mapping for ("image",) in addition to "image", so now a single-key multimodal dict is collapsed to the bare modality (just "image" in this example).

This affected this code:

from sentence_transformers import SentenceTransformer
model = SentenceTransformer('BAAI/BGE-VL-base', trust_remote_code=True)
embedding = model.encode({"image": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/blog/ettin-reranker/mteb_ndcg10_all-MiniLM-L6-v2.png"})
print(embedding.shape)

Which previously failed as the model only implements a path for "text", "image", and ("image", "text").

All Changes

• [fix] Collapse single-key multimodal dicts to bare modality by @​tomaarsen in #3779

Full Changelog: huggingface/sentence-transformers@v5.5.0...v5.5.1

Commits

• ce3ec6d Release v5.5.1
• 610a7c5 [fix] Collapse single-key multimodal dicts to bare modality (#3779)
• f9f3269 Merge branch 'main' into v5.5-release
• 02dc21d Update index tip for v5.5.0 (#3774)
• 833828b Release v5.5.0
• 98ac358 [docs] Load models in float32 in the training examples & docs (#3773)
• d8ee041 [docs] Use modality-neutral terms (input, document) in loss docs & docstrin...
• 4c6850e [examples] Avoid LoggingHandler, silence httpx in examples (#3771)
• 1418823 docs: fix grammar in parallel-sentence-mining README (#3769)
• 22a383d [docs] Use direct class imports in examples & docs (drop `losses.MSELoss(.....
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Project	Deployment	Actions	Updated (UTC)
nyaysetu	Error		Jun 15, 2026 10:59am

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Review Summary

This PR has been reviewed and requires changes before it can be approved. The issues below must be resolved.

Issues to Resolve

Result	Check	Notes
FAIL	Description	Description is missing: a Checklist section with checkboxes.
FAIL	Checklist	No checklist found in the description.
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Passing Checks

Result	Check	Notes
PASS	Title	Title format is acceptable.
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PASS	Merge Conflicts	No merge conflicts.
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PASS	Code Quality	No code quality issues detected in the diff.

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To proceed: push the required fixes to dependabot/pip/nlp-orchestrator/sentence-transformers-gte-5.5.1 and the PR will be re-evaluated on the next review run.