fix: resolve warnings of logger library (#3999)
# PR Summary
This PR resolves the deprecation warnings of the `logger` library:
```python
DeprecationWarning: The 'warn' method is deprecated, use 'warning' instead
```
---------
Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>
Co-authored-by: cragwolfe <crag@unstructured.io>
