Fix issue with `exclude_extra_fields` configuration being ignored

Updated

• CI: Use poetry in the build workflow.
• CI: Use pull_request_target trigger to make sure secrets are passed to runs in forks.

Fixed

• exclude_extra_fields: A typo that prevented exclude configurations from being applied correctly

New Contributors

• @whatphilipcodes made their first contribution in #67

Full Changelog: 0.19.2...0.19.3