SPARKNLP-873 Issue with MarianTransformers models

[danilojsl]

Description

The change solves an issue with Marian transformers in Python by handling vocabulary type from Python side

Motivation and Context

Solves Marian transformers error in Python

How Has This Been Tested?

Screenshots (if appropriate):

• Local Tests
• Google colab notebook

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Code improvements with no or little impact
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING page.
• I have added tests to cover my changes.
• All new and existing tests passed.