v0.3.1

## Highlights
In this version, we are releasing an early preview of `confidence` score for field extraction. Keep in mind that this feature is in preview mode, and its behavior  might change in the future.

## What's Changed
* chore: remove "experimental" from confidence score parameter name by @pappacena in https://github.com/landing-ai/agentic-doc/pull/78
* Update Google Drive Connector tests based on Sandip's code by @cmaloney111 in https://github.com/landing-ai/agentic-doc/pull/80
* Approve integration tests when outside collaborators submit PRs from forks by @cmaloney111 in https://github.com/landing-ai/agentic-doc/pull/81


**Full Changelog**: https://github.com/landing-ai/agentic-doc/compare/v0.3.0...v0.3.1