chore(release-please-test): release 1.5.0

[collindutter]

🤖 I have created a release beep boop

1.5.0 (2025-03-07)

Features

• configs-drivers-gemini: update default embedding driver model to (9ba2496)
• configs-drivers-gemini: update default prompt driver model to gemini-2.0-flash (9ba2496)
• drivers: add support for image embeddings (1841f0f)
• drivers: update default models to latest for Anthropic/Bedrock Driver Configs (b3e4b68)

Bug Fixes

• chunker: correctly determine chunk midpoint when empty chunks are present (#1800) (8ec2a8a)
• decorators: preserve type hints on [@observable](https://github.com/observable) decorator (#1767) (0e5a15c)
• drivers-prompt-openai: remove modalities default (#1774) (7e061b5)
• drivers-vector-marqo: fix upsert failing due to inability to upsert_vectors (#1803) (9b6bfff)
• drivers-vector: don't mutate same instance of meta (#1782) (dd138ca)

Dependencies

• relax dependencies by removing upper bound constraint (5171332)

Documentation

• add back missing docs (#1797) (41ad7f5)
• add back missing observability examples (#1787) (39a5779)
• add log output to every example that produces it (0407fc7)
• custom-tools: improve docs for creating custom tools (#1791) (25b1276)
• fix stray log output (#1784) (584994f)
• improve rag engine example (#1795) (bdc1921)
• recipes: add example of talking to audio file (#1794) (fe27585)

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