GNN fraud detection notebook fix (#1450)

- Add notebook fixes from @tzemicheal
- Migrate remaining pandas code to cudf

Closes #1265 

## By Submitting this PR I confirm:
- I am familiar with the [Contributing Guidelines](https://github.com/nv-morpheus/Morpheus/blob/main/docs/source/developer_guide/contributing.md).
- When the PR is ready for review, new or existing tests cover these changes.
- When the PR is ready for review, the documentation is up to date with these changes.

Authors:
  - Eli Fajardo (https://github.com/efajardo-nv)

Approvers:
  - Tad ZeMicheal (https://github.com/tzemicheal)

URL: #1450