Bump torch from 2.5.1 to 2.8.0

[dependabot]

Bumps torch from 2.5.1 to 2.8.0.

Release notes

Sourced from torch's releases.

PyTorch 2.8.0 Release Notes

• Highlights
• Backwards Incompatible Changes
• Deprecations
• New Features
• Improvements
• Bug fixes
• Performance
• Documentation
• Developers

Highlights

... (truncated)

Commits

• ba56102 Cherrypick: Add the RunLLM widget to the website (#159592)
• c525a02 [dynamo, docs] cherry pick torch.compile programming model docs into 2.8 (#15...
• a1cb3cc [Release Only] Remove nvshmem from list of preload libraries (#158925)
• c76b235 Move out super large one off foreach_copy test (#158880)
• 20a0e22 Revert "[Dynamo] Allow inlining into AO quantization modules (#152934)" (#158...
• 9167ac8 [MPS] Switch Cholesky decomp to column wise (#158237)
• 5534685 [MPS] Reimplement tri[ul] as Metal shaders (#158867)
• d19e08d Cherry pick PR 158746 (#158801)
• a6c044a [cherry-pick] Unify torch.tensor and torch.ops.aten.scalar_tensor behavior (#...
• 620ebd0 [Dynamo] Use proper sources for constructing dataclass defaults (#158689)
• Additional commits viewable in compare view

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Bug Report

Name	Severity	Example test case	Description
Incorrect Embeddings in colpali_embedding_model.py	High	Ingest a document and verify that the generated embeddings are correct.	The update to torch 2.8.0 may have introduced breaking changes that affect the embedding calculations in colpali_embedding_model.py, leading to incorrect embeddings.
Caching Issues in hf_cache.py	Medium	Run a query that relies on the HF cache and verify that the cache is correctly populated and retrieved.	The update to torch 2.8.0 may have introduced changes in memory management or serialization that cause caching issues in hf_cache.py.
Incorrect Embedding Retrieval/Storage in Multivector Stores	High	Store and retrieve embeddings from the multivector store and verify that the retrieved embeddings match the original embeddings.	The update to torch 2.8.0 may have introduced breaking changes that affect the storage and retrieval of embeddings in the multivector stores, leading to incorrect data.

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