Release v2.11.0

feat: Adding audio, video to sdk assets (#205)

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This PR updates the `cohere-compass-sdk` to version 2.11.0.

- `cohere_compass/models/documents.py` adds `VIDEO` and `AUDIO` to the
`AssetType` enum.
- `cohere_compass/models/search.py` changes the `presigned_url` field in
the `AssetInfo` class to be optional.
- `pyproject.toml` updates the version from 2.10.0 to 2.11.0.

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