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## 4.23.1

**`(chore):`** Bump pydantic-core dependency to >=2.18.2 to ensure compatibility with newer pydantic versions and improve performance.

## 4.23.0

**`(feat):`** Add support for custom headers parameter at the top level of the client constructor.

```python
client = Client(
    headers={"X-Custom-Header": "custom-value"}
)
```